Just my two-cents worth but they don't look like either missiles or helicopters. They're in the middle of a field and are probably just storage tanks of some sort. They remind me of a propane storage facility but they could also hold other liquids.
Like Batman answering to a bat-shaped becon in the clouds, label a bunch of propane tanks missiles, and you can be sure Analogman will appear out of thin air to set things right again in the world. Thank you, Analogman.