In '67 the AF had RB-57s, RF-101s & RF-4Cs on the line at Tan Son Nhut. They were right across the tarmac from the Navy line. The 1st time they cranked an RB-57 (my 1st day in-country), I thought an incoming had nailed the Canberra. Everyone laughed their butts off at me. The 57s & 101s were night-only operated and painted dark blue like WWII/Korea USN a/c. Later I saw a WB-57F at Eielson AFB (Fairbanks). Had super-long wings like a U-2 & I don't think it was used for WX reconnaissance. This was Summer of '68. It was neat to see the Navigator carry a periscopic sextant in to back-seat of a 2-seat jet while wearing a full-pressure suit. FWIW.