Before I say anything, thank your son on my behalf for his service. He's a hero.

Mom certainly has every right to see her son, but I do understand the wife's position as well. I think she (mom) should definitely be able to see her son step off the plane, but I do think it's understandable if the DIL and your son would like some privacy, though I do second Leed in that they aren't going to be doing anything, so I don't understand the DIL's trepidation. It's hard to call either way, as they both have a case, but I don't think it's entirely fair that DIL would request your wife simply not go...she has a right to be there.

Do you think they can come to some sort of agreement?