Why was the SR-71 retired?

Esquire dissects whether the Cold War icon was really killed by Dick Cheney
America, Aviation, Cheney, Cold war, Exit notes, Planes, President of the United States of America, SR-71, Tech
America, Aviation, Cheney, Cold war, Exit notes, Planes, President of the United States of America, SR-71, Tech
05August2014
Matt Pomroy