An annual award has gone to one of the U.S. Air Force’s most secretive drone squadrons, offering a very rare window into its activities. The 30th Reconnaissance Squadron is one of two units known to operate the stealthy RQ-170 Sentinel, and it is unusual to hear anything about its operational exploits. Much about the RQ-170 itself remains highly classified 17 years after its existence was first officially acknowledged. The General Atomics Remote…