CF,
The huge majority of large mountain and forest aerial surveillance is performed by unmanned aircraft, then, once found they just go in and destroy it. The DEA now have drones with incredible technical capabilities, and the technology is getting better every day. It's going to become a real challenge to hide outdoor grows in the very near future.
If you are going to do an outdoor grow of more than just a plant or 2 be sure to go somewhere where NO ONE else is growing, or has grown in recent years. I mean FAR away (like 50 miles).
Just a word to the wise..
ISO
__________________
The Essence of Compassion
"Resolve to be tender with the young, Compassionate with the aged,
Sympathetic with the striving and tolerant of the weak and wrong......
...... because sometime in your life you have been guilty of all of these"
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ATF x Purple Kush, Mango x Romulan, White Widow x Skunk#1, Purple Willie