Take this personally.
Are you a military wife or girlfriend? Here's a great idea! Miss A brought a military style jacket to her session to personalize her photos. Personalizing your session is a great way to honor him; It could also be a surprise for when he gets back (and a way to show off the body you've been working on since he left!). Be creative and in tune with his interests - baseball fan? Bring a hat! Snowboarder? Bring a ski hat! The possibilities are endless...