Hello! There are some links did not work anymore, and some are little "off topic", but in this link you can find an interesting story:
http://www.vectorsite.net/avb472.html (doesnīt work anymore, but text is copied when it still worked)
"On 8 May 1954, an RB-47E flying out of RAF Fairford was paralleling the Soviet border over Norwegian airspace, and then abruptly turned into Soviet airspace to overfly airfields around Murmansk. The RB-47E was flying at high altitude, out of reach of MiG-15s, but unknown to USAF intelligence some MiG-17s had been stationed in the area and they were able to intercept the intruder. The RB-47E's tail turret malfunctioned, as it often did, and the crew couldn't shoot back, while the big aircraft took some hits and was damaged. It managed to get back out of Soviet airspace over Finland and finally performed an emergency landing at RAF Brize Norton after a last-minute cliff-hanger topping off from a KC-97. Finnish news reports indicated an air battle, but the USAF denied that any US aircraft had been in the area.
The pilot, Hal Austin, was reprimanded by the commander at Brize Norton for defying control-tower instructions. Back on the runway, the aircraft's crew chief looked over one of the cannon holes in the fuselage and asked the pilot: "What the hell did you hit?" The whole thing was completely secret and so Austin only replied: "It wasn't a seagull." The reprimand was quietly removed from Austin's record under LeMay's orders, and he was even more quietly awarded a medal for the risky mission."
In another link Austin self tells more about this case...
Yours
Jukka