Mach 3 interceptor

I found this to be pretty cool. Before the SR-71 a version of the craft was built to carry three long range air to air missiles. It was built to intercept supersonic bombers. To bad they never built many of them.

Here is a think to the craft: Supersonic

That's pretty cool.

What speed to typical air to air missiles fly at?

There are many different speeds at which they can fly. In this case it seems that the missile would have to travel at mach 3 to keep up.