Gulfstream Awarded 700 million In Air Force Support Contracts Various branches of the United States armed forces utilize special mission derivatives of Gulfstream large cabin jets. The G550 (C-37B), GIV (C-20G) and GV (C-37A) are all used of course have different designations under their operations but this leaves those jets to need support from the OEM, in this case Gulfstream. To this end, Gulfstream was awarded nearly 700 million dollars (696 million) in support contracts. $612 million is earmarked for engineering services contract (ESC) and is a 10-year renewal of a previous ESC. The remainder $84 million is for contractor logistics support (CLS). This exercise is the contract of the fourth-year option of an existing CLS contract.