Though it was apparently a ground-based air defense system that shot down Malaysia Airlines Flight 17 (see page 23), shorter-range man-portable air defense systems (Manpads) are still a top concern for the TSA. Administrator John Pistole lists the threat of Manpads to arriving and departing flights at foreign airports as among his top aviation security concerns. The U.S. has good control of airport perimeter security, but not all foreign airports have assessed the vulnerabilities of their airports, he says.
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