We did an annual trip to Sun N' Fun, including flying into LAL, when I was a CFI.

Entering the pattern there (5-10 miles out) is a close call that just pretty much remains a close call all the way to the parking spot.

 

a while back I was doing a cross country flight with a student of mine, and about 20 miles from the end of our flight I saw a plane on our TIS about 10 miles out and 1000 feet above us.. I spot the aircraft and see him flip inverted.. I thought to myself that it was pretty neat to see that, and he flipped right side up... when he was almost directly above us I watched him flip inverted and dive straight at us... I made that da-20 eclipse knife edge and just barely got away from him. I then spent the next 5 minutes or so trying to see where he was so he wouldnt hit us from below... come to find out its some d-bag in a T-28 who is based at the airport I was flying to... too much money and not enough common sense... no ground spotter or radio calls... apparently he has had MANY complaints about unsafe actions... Im just lucky I wasnt his first "victim"....

 

I was doing a rental checkout in a G-1000 172 one afternoon out underneath the DFW class B. I was in the process of explaining to the guy in the left seat that the TIS display will only pick up planes with a working transponder, and that it's no substitute for looking out the window. Not ten seconds after that I zero-G'd the thing to avoid some nutjob in what appeared to be a partially completed homebuilt crossing just in front of us. He was close enough that I could see his curly blonde hair waving in the wind under his david clarks... (It was doing this because the damn thing didn't have a canopy on it yet!). I would have gotten his N number, except it didn't have one of those either... You never know who you're going to run into out there... (Though, hopefully not literally)