Mark Chartrand seems like kind of a crappy con man.
The 46-year-old former St. Louis soccer coach was busted in 2011 for pretending to be an undercover intelligence agent as part of a convoluted plot to stiff his girlfriend on more than $100,000 in loans.
He did more than a year in federal prison on that one, but it apparently was not a "scared straight" experience for the imposter. Authorities say Chartrand posed as a decorated military vet and Purple Heart recipient during a 2016 trip to California.
Staying in an Airbnb, he parlayed his fake heroics into a line of credit and loans from his host, and then skipped out without paying.…