Is that an AIRCRAFT warning light on the tree?

Here's another view of the Nextel/AT&T Wireless Co-Lo site on USMC property in San Diego. This angle shows the microwave antenna used for backhaul purposes.

Notice how the bark cladding ends at the level of the lowest branches. Modern design (and permit conditions) would have the cladding extend to the top of the tree. Modern design would also extend the branches closer to the ground, and would provide for significantly greater branch coverage. Finally, modern design would also provide for camouflage covers on each of the antennas, and better treatment of the microwave radome.