@HuskyDynamics01 in real life there are fox 1 2 and 3 1 is radar ones that require a constant lock (like the guardian) 2 is heat seeking (they are like short range stealth missiles - the only way to tell that one has been launched is if you see it ) and 3 is radar ones that are fire and forget (like the interceptor)

no not in sp

In real life flares try to counteract heat-seeking missiles (like the AIM-9 Sidewinder, the basis for SP's Guardian missile) while chaff serves to defend against radar-guided missiles (such as the AIM-120, the basis for SP's Interceptor missile), but in SimplePlanes there's no real difference other than flares look a lot cooler, since all missiles in SP use the same type of guidance.

As a side note, though, the Guardian and Interceptor's different ranges and targeting kind of reflect the difference between heat-seeking and radar-guided missiles, to a certain extent anyway. The Interceptor can achieve a lock at long range and has an internal radar allowing for "fire-and-forget", but has a narrow targeting ring and is ineffective at distances under 2 miles. The Guardian, on the other hand, has a much quicker lock time, larger targeting ring, and can reacquire a lock if lost, but has a maximum range of only 5 miles and does not have its own internal radar.