Question: Bat 21 Bravo was the call sign for this US Air Force Lieutenant Colonel during the vietnam war who was rescued behind the lines of North Vietnam in what is known as the largest, longest, and most complex search-and-rescue operation during the Vietnam War
Sentence (from "Rescue of Bat 21 Bravo"): The rescue of Bat 21 Bravo, the call sign for Iceal "Gene" Hambleton, from behind North Vietnamese lines was the "largest, longest, and most complex search-and-rescue" operation during the Vietnam War.
Relevant evidence: Yes