David Crenshaw is the primary protagonist of Tom Clancy's H.A.W.X .
Crenshaw is a former U.S.A.F. combat pilot who served as squadron leader of the H.A.W.X squadron before its termination. Crenshaw and his fellow H.A.W.X. members join Artemis Global Security, a combined arms PMC (Private Military Company) after receiving an offer from Adrian DeWinter, the C.E.O. of Artemis. Crenshaw and his wingmen served with Artemis for 6 years. While flying a support operation for the U.S. Navy, Artemis ends it's contract with Brazil (and by extension the U.S.) to pursue a more lucrative contract with Las Trinidad, a group fighting against the Brazilian government, before invading the U.S. under their own initiative. Crenshaw and his men defend the U.S. carrier group against the Artemis attack, turning on their former employers. Shortly afterwards the H.A.W.X. squadron is reinstated to help repel the Artemis invasion of the United States, and were instrumental in doing so, removing Artemis' nuclear capabilities and thereby crippling the attack. DeWinter and the other executives went into hiding and were eliminated during a black operation flown by Crenshaw.