I got all of them right, in my own way. 1 and 3 were by the book correct, and I did what GK did with the Not Equal to, for the rectangle, I used the bottom border of the answer area and drew the other 3 lines.
There's a clip somewhere with what I think are British soldiers hunkered down in some ditches calling in A-10 air support that gets a little too close and spoils their jolly mood.
This guy performed at the last airshow I went to at Seymour Johnson AFB... very cool display that guy does things in a Piper Cub that I didn't know were possible.