Look at getting a lens with IS for airshows (or at least a quicker one). I have been using this lens (http://www.calumetphoto.co.uk/item/321-637C/) since I got my camera with good results, similar lens but with IS.
Great shots Gary, I agree with you on that lens. I took some shots today and`got a little blur. I might get the same lens or the 250, with IS. Cheers and don't stand to close to those birds with a sandwich in your hand. 8)
Great catch on the grasshopper shot Gary!! And I can see you trying to drag a semi sideways. Be kinda like the chicken hawk trying to drag Foghornleghorn.