WHAT IS GCA? The Goddard Contractors’ Association (the Association or GCA) is an organization which serves as a medium for the exchange of information between members of NASA Goddard Space Flight Center (GSFC) management and that of GSFC’s contractor community. Apply For Membership Our By-Laws Ryan GerardPresident - GVTDon FrankVice President - vansysJaime KlineSecretary - Relative DynamicsMark FergusonProgram Manager - Velos LLC