There are just three siblings left in the American family of bombers. There’s venerable Boomer B-52, which first flew when Truman was in office and entered service before Ike had finished his first term. Generation X gets the B-1, a fast and powerful craft designed to fly under the radar. And then there’s the millennial of the group, the too-advanced-for-its-time stealth B-2 spirit, a technological marvel with a production run cut short by the end of the Cold War. This week, for the first time ever, all three bombers had a family reunion of sorts at Andersen Air Force Base in Guam.