EZ-3 &4 is the fully integrated flight system that will be attached to the aft-end of the Atlas V Centaur launching SBIRS Geo-5. This flight system is comprised of an adaptor plate, isolators, canisterized dispenser, and the TDO-3&4 small satellites. TDO-3 and TDO-4, are carrying multiple U.S. Government sponsored payloads that will provide critical experimental data. (Courtesy photo)