Somalia Gives Birth to the Stryker

This according to Strategypage:

In the wake of the battle of Mogadishu in 1993, where American rangers and commandoes had to battle thousands of Somali militiamen without the help of any American armored vehicles, there was a lot of brainstorming on how to deal with future incidents of that type. The U.S. Army noted the wheeled armored vehicles the marines had been using since the 1980s, and the experience of many European nations with these vehicles. Several officers who had been in Mogadishu (including a marine general, who just happened to be there to check up on training) agreed that wheeled armored vehicles like the marine LAV would have been a big help, and could have been airlifted in quickly because of their lighter (than tracked armored vehicles) weight.