I was working on instrumentation for testing an IR suppression system for the Phrog's exhaust. Here [0] is the exact aircraft (BuNo 152578) sitting at the Pax River NAS museum, with the IR suppression attached (and a nice big bundle of our thermocouple wiring, too). From what I could find in the records, this was either the 4th or 5th time the Navy had tried something like this, and the results were less than promising.