A surprise military presence on our beach

Chief was sitting on our porch gazing at the Gulf when 2 Marines came marching down each side of our house down to the beach. This got his attention! They didn't even acknowledge his presence in any way.
He ran inside to get the camera, snapped off a few pictures and then went online to the local expat forum called Yolisto to see if anybody else had seen the Marines. Of course, people up and down the beach were posting like mad! We found out later that a local fisherman had found 42 kilos of cocaine wrapped in waterproof coverings and attached to some floats. He found it about 4 houses down from us. Yowza. I don't think anything like that had ever happened around here.
Apparently the cocaine had been in the water for some months as there were barnacles on it. We had just had a very windy storm, called a norte, and a lot of stuff washed up, including the drugs.So, it could have come from anywhere. So, the question is: do we feel really safe with all this military? guess it would depend on how corrupt they are... At least common housebreakers would be scared off.