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About Us

Meet the GA Team

At the core of our company's success is a dynamic team of experts that are resourceful, results- driven and keep our client's goals in mind with every step of the way. Learn about GA's team of professionals that are dedicated to our clients.

Annette Summers

Annette Summers

Annette Summers knew at a very young age that she wanted to own her own firm. Growing up in an entrepreneurial family, she always had a vision of owning a firm that would be a rewarding, fun and an exciting place to work. She wanted to create a place where employees were consistently recognized, had a sense of belonging, and enjoyed coming to work each day. Her vision was to create an environment where employees grow and develop and where relationships with clients are rewarding. The dynamic and supportive team environment found at GA is what she always envisioned. She recognizes Michael Giuffrida, the founder of Giuffrida Associates for the foundation he set for the success of GA. She credits him for his ongoing mentorship and wisdom that has been a large part in shaping her professional life today.

Annette’s vision for teamwork can be found throughout the entire corporate culture. The sense of passion and enthusiasm for exceeding client expectations stems from the internal drive threaded throughout the cultural signposts. Because the GA Team members are truly a part of the company, they take pride in the work they deliver. We are often asked, “How did you make this event look so seamless and turn out so perfect – yet again?” It was easy. Because everyone knows that highly effective teams, operating at their fullest capacity, by their own choice - will always achieve. The best part? We love what we do and we have fun doing it. And that shows in the work that we do.

For 15 years, Annette was a member of the leadership team for Maryland Leadership Workshops, a program that focuses on communication skills, diversity awareness, and leadership training for young adults. She was responsible for program design as well as training and evaluating a staff of 40, which delivers an annual summer program to over 300 young leaders.

In addition to serving as President of GA, Annette is instrumental for key organizations within GA. She manages GA’s Strategic Planning/Facilitation service line and enjoys routinely checking in with all clients and their goals. Annette serves on the Advisory Board for Axela, a Government Relations and Lobbying Firm. In 2005, she was selected as one of the top 100 women for Leadership America.

Annette has a degree in human resources and communications from James Madison University.

Annette’s favorite quote about teamwork:

“Talent wins games, but teamwork and intelligence wins championships.”
~ Michael Jordan

Sheila Crowley

Sheila Crowley, CMP
VP of Client Relations

When we celebrated Sheila’s 20 years with the company, she was surprised at how fast the time had flown. Sheila Crowley joined GA knowing that her key strengths were a perfect match for the company’s services. Today, twenty years later, Sheila continues to be a pinnacle part of GA’s success.

Sheila approaches every client, event and project with flexibility and ease. It is this flexibility and calming nature of Sheila’s that has made her so popular among her clients. This cool-mannered approach follows Sheila in even the tightest of deadlines or toughest of events, keeping the atmosphere calm wherever she goes.

Sheila Crowley

Sheila received her Certified Meeting Planner (CMP) 10 years ago and pulls on the strength of this certification to guide her clients for all of their event and meeting planning needs. In addition, she has 15 years of association management experience where she has served as the Executive Director for multiple clients for over 10 years. In her capacity as Executive Director, Sheila prides herself on her ability to listen to a client’s needs and work with the team to provide an innovative solution.

Sheila’s expertise in association management and events, coupled with her team spirit, have been the foundation of her success at GA for the last 20 years.

Sheila has a Bachelor of Arts degree in Public Relations and English from Syracuse University, Syracuse, NY, SI Newhouse School of Public Communications.

Sheila’s favorite quote on teamwork:

“Alone we can do so little; together we can do so much”
~ Helen Keller

Torrie Nickerson

Torrie Nickerson
Client Services Executive

Torrie’s passion to exceed her clients’ expectations in everything she touches makes her an obvious fit to the GA Team. With 10 years of experience servicing those of all ages in the recreation, sports and event management industry, Torrie is adaptable to any situation thrown at her, while maintaining a good sense of humor and smile on her face.

Torrie is a firm believer in the importance of customer service, and enjoys nothing better than delighting another client through the team’s attention and hard work. From her time running a customer service department for youth baseball camps for the New York Yankees, Boston Red Sox, Chicago Cubs and Washington Nationals, she took away valuable lessons on how to manage a wide array of customers, facilitate multiple communication channels and effectively achieve numerous cases of conflict resolution that she still incorporates into her every day life.

Additionally, as a member of the 2015 World Police & Fire Games organizing committee (a 501(c)3 mega international multi-venue, multi-sport event serving over 10,000 athletes), she learned how vital preparation and teamwork are to executing a 10-day event of that size. She credits the hard work of that entire team for pulling off such a successful Games.

Torrie is thrilled to display her talents as part of the GA team, who share the same vision and values, and is excited to contribute to their exemplary reputation.

Torrie received her Bachelor of Science degree in Sport Management from the University of Massachusetts, Amherst.

Torrie’s favorite quote about teamwork:

“Teamwork is the ability to work together toward a common vision. The ability to direct individual accomplishments toward organizational objectives. It is the fuel that allows common people to attain uncommon results.”
~ Andrew Carnegie

Tamara Winns

Tamara Winns
Member and Accounting Specialist

When you are fortunate to find an individual that specializes in accounting, with an additional expertise in databases and event planning, you have an individual that is the perfect fit for the GA Team.

Tamara Winns brings over 20 years of accounting experience to the GA Team. She specializes in all aspects of corporate and nonprofit financials, including managing all aspects of quarterly and annual budgeting, financial reporting, accounts receivables and payables. She has expertise in monitoring and filing all tax matters in addition to audit preparation and review.

Tamara’s passion for ensuring costs are monitored and that expenses are minimized is witnessed in the annual financial reporting she provides to clients and to GA. She is always looking for ways to negotiate a better deal and save additional money. In today’s cost cutting world, this adds up fast!

Aggressive monitoring on all outstanding invoices is another key way that Tamara adds value to all of our clients. She takes pride in careful follow up to ensure clients close out events with proper payment and by helping to assist with member retention with consistent follow up.

In addition, Tamara applies her same organizational ability and attention to detail to all client databases. She specializes in creating membership databases that are intuitive and always kept accurate. With her accounting background, she recognizes the importance of accurate information on all members and donors. Her dedication to ensuring all members are captured is the backbone to making all of our organizations so successful.

Tamara’s passion for exceeding expectations and willingness to always go the extra mile makes her a truly wonderful asset to any team. GA is fortunate to have her as a member of ours. Clients consistently sing her praises and our staff does as well.

Whether it’s managing our accounting, membership or registration databases, or helping to manage an event; Tamara brings a wealth of knowledge and expertise that makes a positive impact for all involved.

Tamara’s favorite quote on teamwork:

“The strength of the team is each individual member. The strength of each member is the team.”
~ Phil Jackson

GA has a depth of experienced staff responsible for the day to day operations and/or specializing in specific areas of our business. Working closely with our President and Account Executives, this core group provide significant support to ensure our client’s expectations are always exceeded.

Mindy Trzcinski

The GA Team is dedicated to providing superior services to every one of our clients, and Mindy Trzcinski helps us achieve that with her expertise in GA’s strategic planning and event planning needs. A former employee of the Federal Bureau of Investigation Evidence Control Unit, Mindy served as an Evidence Request Coordinator, managing cases that came into the laboratory and assisting law enforcement with their needs related to the case. She was the Cold Case Request coordinator, so in addition to high priority cases she worked closely with law enforcement to reexamine cases and assist in offering the FBI’s latest technology to older cases. Mindy’s ability to succeed under pressure and her high attention to detail make her a critical part of the GA Team.

Mindy has exceptional facilitation skills and is excellent at working with our clients to plan events. Her background in teaching courses on motivating volunteers, strategic planning, keeping groups focused and achieving goals have given her the tools to succeed at GA and an impeccable reputation with our clients.

When GA facilitates a significantly large event, Mindy is always the key to our success. Her enthusiasm and dedication to our clients make her an invaluable resource. She is always ready and willing to manage volunteers and contract staff and does it flawlessly.

Mindy was a member of the Maryland Leadership Workshop team for ten years, where she facilitated leadership development programs for high school students. Some of the discussions she facilitated were diversity training, conflict management, project planning, and self-awareness. Three of the ten years, Mindy served as the Director of the Maryland Leadership Workshops Senior High Workshops. She was responsible for the hiring and training of a staff of thirty, and oversaw the planning and execution of a one week overnight program for 250 high school students.

Mindy’s favorite quote about teamwork:

“Never doubt that a small group of thoughtful, committed people can change the world. Indeed, it is the only thing that ever has.”
~ Margaret Meade

Rachel Marsteller

After every event with which Rachel Marsteller is involved our clients always make a point to let us know that her high level of customer service sets her apart from her peers. Her area of expertise is event planning support. Whether it is registration assistance, ushering individuals to their meeting room space, or helping speakers get prepared for their session, Rachel is always prepared and working hard with a smile on her face.

We have been told by multiple clients that Rachel has the ability to make anyone feel comfortable. Her warm and welcoming ways are calming and reassuring. Yet, her decisive and organized manner allows her to take control of any situation to keep systems running smoothly and efficiently. In her spare time, Rachel works as a 911 call taker and volunteers as an EMT, which further exemplifies her desire to help others feel at ease.

Rachel has a Bachelor of Arts degree in Communications and Business Administration from Elizabethtown College in Elizabethtown, PA.

Rachel’s favorite quote about teamwork:

“Unity is strength... when there is teamwork and collaboration, wonderful things can be achieved.”
~ Mattie Stepanek

Web Developer

The GA Team is proud to offer a full range of services to all of our clients, including the development of online content and web design. As with all of our work, we maintain the highest level of professionalism with our website development and take great pride in bringing our clients the best.

The GA web developer is an expert in developing significant e-commerce systems with a specialization in designing automated features that decrease administrative time spent on registration and financial management. They are also able to create specialized web programming options to cater to all event needs.


Newsletters, press releases, bulletins, website updates and announcements are all weekly occurrences at the GA office. Our clients have come to expect the best from us and we continue to deliver on that promise.

When we release any written statement from a client, our editor takes a thorough and engaged look before allowing it to be released. At GA, we know that we are representing the client and we take great pride in representing them well.

Conference Management

A significant portion of our time at GA is spent planning and organizing conferences. The GA Team provides first-class conference management to our clients. Year after year, we are consistently told by our clients that the conferences keep getting better and better.

The GA Team handles everything with the knowledge and skill one would expect from an expert in the field. From negotiating and overseeing contracts to printing certificates and name-tags, we have it covered.

Marketing Management

The GA Team embraces technology and always tries to be ahead of the most recent trend. We offer complete marketing management to our clients. The GA Team has dedicated members that work with the client to design websites, brochures, graphics, signage, and emails that will put them far ahead of their peers.

Whether it is for an upcoming conference or something as simple as advertising an upcoming webinar, the GA Team knows exactly how to market it in order to gain the most interest and excitement from members.