subarblue's story sounds like me earlier today...in a U-2.
Head out for recon over Cuba, thinking "ok, simple, stay high." But, I get some SA-2s firing at me. Both miss. Now me, usually flying Thuds, Vipers, or Rhinos at low level, dives for the deck. Mind you, I've completely forgot I'm unarmed (not to mention I still hadn't eaten breakfast so I was getting impacient.) Zoom down to about 8,000 feet. Level out. Take some pretty pictures of the airbase/city I'm over. Then, I notice several silver flashes. After an F6 or two, I see that these are two rather pissed off MiG-21F-13s, already on full burner, most likely coming down to dive on me. Now, I decide it's time to run. So, I hit the throttle, and I try to zoom up, but then I remember "Oh right...SA-2s." So, I go back to 5-8 thousand feet. MiG no.0 reaches me, and fires his R-3s at me, both missing. He comes in for guns. I get frantic, and lightly tap the stick in hopes of confusing him: nope. I did however, lower his airspeed to the point where he's flying with a high AOA to not stall. He goes burner and flies up. I fly up, slower of course. I go to external view, and notice that Comrade Captain Dmitri is too close! But, it's too late, and he smashes into my tail, and goes down. I somehow am alright, and continue towards the Gulf. MiG no. 1 now reaches me, and fires of his R-3s, not as rapidly, with one nearly getting me. He goes for guns. I try to do the same thing, but this guy is smarter than his commander. He goes left, and leaves me thinking I'm safe. So, I get over the water. And go external. I F6. See MiG no.1 in burner. I figure he's flying home. Well, he levels out. I start panning around, see a shiny object infront of him. A wingie? No. Me. By that point, it's to late. I recall saying, "Hey that's me! Come on, escor.....oh sh**...". The latter as he fired his gun. I became a POW. I heard that Junior Lieutenant Nikolai became a Hero of the Soviet Union after that encounter.
Moral of the story: If your in a U-2, and the map has SA-2s or MiG-21F-13s, stay at 50,000ft+ and take the SA-2s.
He's the photo that made into Krasnaya Zvezda two days later.