Wow, no wonder they were so picky about who got to fly those birds, that's a LOT of information to monitor!. What's amazing was it's ability to outrun missiles shot at it and shoot at it they did, but never successfully. Also it was designed in an era were computer aid was not much, if any, help yet that team overcame insane design challenges to build an aircraft that was so good all of it's records STILL hold to this day, well over 50 years after it was introduced. IIRC it was expensive to use because of the extensive need for in-flight refueling and it also required all kind's of special lubricants, parts that were specially made just for the extreme environments the '71 operated in, Still sad that they no longer fly though, bummer..