There was an incident in 1995, right after the Dayton Peace Accord was signed, where a group of US Army Rangers were conducting a sweep for any Serbian forces who might have come across the border and they walked into a village that had been completely taken over by Chechen fighters who'd just finished clobbering the Russian Army back home and were out looking for another fight. If I recall correctly, one Ranger was killed and several others were severely injured before they could break contact. At first, no one wanted to admit what had happened, but it eventually broke, created a stir for a few days, then quickly faded into the background.
You might want to check your source on this one, Stonewall. The only source I'm familiar with on the "Rangers in Bosnia" line of stories is Serbian, and purported service in the Balkans is one of the litmus tests used to sniff out posers by veterans of the Regiment.
Special Operations Forces In Bosnia (1/27/96)
Army special operations units in the area include the 1st Special Forces Group, Fort Lewis, Wash.; the 5th Group from Fort Campbell, Ky.; the 10th Group, Fort Carson, Colo.; and the Army National Guard 20th Special Forces Group, Birmingham, Ala. Portions of Fort Bragg’s (N.C.) 4th Psychological Operations Battalion, 96th Civil Affairs Battalion, and 112th and 528th Special Operations Signal battalions are also in Bosnia.
While the Rangers are high speed and do secret squirrel stuff, they're not higher speed nor doing more covert secret squirrel stuff than the aforementioned Special Forces Groups.