In level 2 "Recovery", under the Delta difficulty setting there is a rocket launcher at the roadblock where there is a truck full of KPA. There is also a rocket launcher and a Precision rifle leaning near the back wall outside of the house at the radar station. There are at least two rocket launchers at a small white building adjacent to the town hall (KPA HQ). There is a rocket launcher at the gas station cash register. Along with the rocket launchers in the school, those two tanks are easy to destroy. There is also enough Precision rifle ammunition at the second floor pillbox of the KPA HQ to max out your capacity.