We got this guy, too. It is not pentagondefense.com, but rather pentagondefense.us. However, the website is password protected, but there may not be anything behind those passwords. Our CEO asked questions about the publication and getting a copy of it and the guy didn't seem to want to do that.
I too received a message from Earl, but let it go to voice mail. Thanks to everyone for posting this information. After 1 web search, I found this information and can happily ignore Earl's message.
it's a sales call; they are trying to gather information about your company saying we want to discuss the program your company is involved in (military) - when you ask which one, it's "all of them." website is vague. i have gotten 3 calls in a month for our president. if he's interested he'll call back, which he hasn't.