The HH-60G Pave Hawk fleet, which dates to the 1980s, has been hard-used over 18 years of nonstop Middle East missions as USAF'scombat search and rescue platform. A variant of the CH-47 Chinook was chosen in 2006 to replace the Pave Hawk, but after successful protests and other problems, the Boeing "CSAR-X" program was canceled in 2009.
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