I'm spending the summer in Massachusetts for an internship. I didn't bring any guns with me since I cannot carry here. Everything seems to be illegal for purchase here, with a FIC. How do the laws look at possession of say mace or a taser without a FIC. Normally I wouldn't ask by my internship is placing at field sites with high ORV traffic, out in the woods, behind a retired landfill, next to a superfund site, ect at dark in the early AM. Some sites I have a letter allowing my presence on private land from the state (mostly corporate property) Many of the site have multiple objects with multiple bullet holes of various calibers. So I'd like some sort of defensive tool if it is legal. My work will be on Army Corp of Engineers property as well as some private commercial/industrial lands, so I'd like to stay legal.