that is what they want you to believe.
There is very little reason to jump for outlandish theories when the simple ones work, especially when the police lack any sort of drone capable of airstrikes (much less the required ordnance). I'd believe the CIA doing such a thing (as they already have the resources) over some random city's police department struggling with funds.
Drone Airstrikes are mainly popular for taking out targets that are too difficult to get to in person, or for attacks of opportunity with idlers in a hotspot. In this case, it is a waste of funds as well as resources (not to mention risking public backlash if some dipshit reporter/punk-with-a-camera catches wind) to stage an airstrike on one person in a cabin in the woods (Who has placed himself in a sitting duck situation), when it would be far easier to have the drone idle and track him, walk a SWAT two-member sniper/spotter team near, flip thermo and use an anti-material rifle (which ALL major cities have access to) to shoot through the walls and splatter the idiot. Faster, cheaper, no room for error, no chance to anger the public for using drone airstrikes, and much easier to clean up if you want to change a story (Not that you really need to, in this case). You can't really hide a bomb that well... It leaves one hell of a fingerprint.
*shrugs*
To each their own.