L-3 and Israelis Fund Their Own Countermeasures
Although not backed by the U.S.

Although not backed by the U.S. Department of Homeland Security research-and-development fund, at least four other antimissile systems are vying to protect civil aircraft from the Manpad threat: L-3 Avisys of the U.S., and Israeli groups Elisra, ELTA/IMI and Elop.