Elgiloy and the SR-71 Blackbird ...

The Blackbirds over the Baltic Sea usually flew from Germany always on the same route over Denmark then to the right to Bornholm then north as far east as possible along the Baltic Sea. Over Åland they slowed down to Mach 2.5 and turned back south increasing to Mach 3 again passing to the west in international air space between the Swedish large islands Gotland and Öland.
Swedish pilots in the 80s used to start at 8000 meters altitude and accelerate north to mach 1.35, then climb with between 3-5 degrees angle at continous acceleration on an opposite heading to the Blackbird that was heading south. The encounters were very fast and dangerous said former SAAB JA37 Viggen fighter pilot Per-Olof Eldh. One of the encounters occured the 9th of Januari 1986. He got a radar lock with Skyflash at maximum range. When the Blackbird passed about 2000 meters above him he could see the dark grey aircraft. Debriefings concluded successful shot down if they would have fired. Per personally experienced 5 encounters in total.
For the full story (In Swedish only) read here:
http://www.mil.se/attachments/iof_nr6_05.pdf

A correction, the flights over the Baltic Sea were from Mildenhall in the UK. Swedish flight debriefings concluded severla times that the Blackbirds would have been shot down if they had fired. The SR-71s often passed very close to the Swedish air space on their way back to base.

Correction, shoot down unlikely!!!! SAAB JA37 Viggen during the mid 80's carrier the AIM-9 sidewinder, top speed mach 2.5 operation radis 1-18 km. Also please note that swedish pilots, knew the route the SR71 would take. In a live fire, combat situation, this would have not been know.
However,the Swedish Air Force did received from the USA the AIM120 in 1991 with a top speed of mach 4.0, then it might have been possible, but all flights over or near Sweden stopped in 1990 do the the retirerment of the SR71.