Hammerheads by Dale Brown
One very good read is "Hammerheads" by Dale Brown. a great novel about drugs counter insurgency in the US. It features the use of the V22 Osprey very much and goes into some detail about the aircraft. The funny thing is that the book was first published in 1990 and may well be out of print now.
Hammerheads was one of Dale Browns early novels and was very good. He seemed to use plots which appeared in print several years before something similar happened in reality. In the mid 1990's he wrote a book called "Storming Heaven" which as far as I can recall was about hi-jacking Airliners and crashing them into American cities!
His later novels were not so good and tended to be little more than Sci - Fi.
He was written up as an Ex USAF air force captain on B 52's and F111's.
Tigerfish