I know, I know, a yellow Harvard but I thought it may be of some interest for the modellers out there as far as exhaust staining on the non slip surface on the wing.
Picking up n yesterday's comment about how long we will be flying the CF-18s, this photo made me smile. The CHipmunk in this photo was built in 1956, the CF-18 was built in 1985. This means there is 29 years age difference between the Chipmunk and the CF-18 meaning the CF-18 is closer to Chipmunk in age than it is to new build aircraft.
Our government military procurement programs are a complete joke. If I used the same approach to buy a new car I'd end up paying $50,000 for a used Ford Granada.