I worked for a defensive contractor in the early 2000s. We had MS2 and ATC programs in our facility. Anything that had to do with the operations of ATC was writ

I worked for a defensive contractor in the early 2000s. We had MS2 and ATC programs in our facility. Anything that had to do with the operations of ATC was written in ADA. Almost all the guys I worked with went to school at Embry Riddle. Pretty sure those systems are still written in ADA.