Used to get TCAS warnings often going into SPS. A T-38, 500 feet below you closing at 300 knots will do that.

Neatest maneuver was getting a vector in the E120 one morning so a pair of F-15's could do an "Eagle Departure," several miles to the South of us. Announced it on the PA so those seated on the right side of the aircraft could watch. We were at 15,000 two came off of Robbins, rolled inverted to shallow their climb as they passed through about 15,500 burners blazing in the twilight sky. Quite a sight