Jack,
Congrats.
But I wouldn't even worry about Walgreen's, it is trivial in the bigger picture of his life. His obligation was finished when he got suspended and no one can blame him for his attempt to cover his obligation which was the most important thing he could do. Was he making it a career there, say as a Pharmacist or some other professional, I would then worry about it but seeing that he made a good and wise decision to go into the Navy, not to escape as many do but as a career, it is a blip in his life and should be as important as being asked "paper or plastic".