I've got a couple of friends and we've got plans for some fun. We're going to put Mavic #1 up, and put Mavic #2 behind it with Active Track set to Trace Mavic #1. Then we will put Mavic #3 behind Mavic #2 with Active Track set to trace Mavic #2. Then we will fly Mavic #1 around while Mavic #3 follow Mavic #2 and records Mavic #2 chasing Mavic #1. I need to make sure we're smart about elevation to they don't run in to each other if/when Mavic #1 stops. LOL. I think it will be fun.