Cocos Island and Lagoon are at the extreme southern portion of Guam. Cocos Island is about 2 miles from Guam across Cocos Lagoon and is where the US Navy is reported to have secretly experimented on military personnel.
Santa Rita is where the United States naval base stored nuclear, chemical and biological weapons back in the 1960s and easlier. Fena Lake is the Navy's water supply, even for the ships that ported on Guam.
His article "Bequerels on the Brain" discusses the environmental damages which plague the region and their affect on the bio-systems that live in and pass through that region.