The voice/piano version of the piece is available under the title "Pfc. jesse Givens" through Classical Vocal Reprints.
For those who don't haven't heard about Classical Vocal Reprints, they are a fine company that's been around a long time that specializes in out of print and hard to find vocal music. I did some checking and the piece is indeed available on page 39 of the 2008 CVR Catalog (warning: 10MB pdf file) with the following info:
Private First Class Jesse Givens (to the fallen in Iraq) Voice: BAR CVR#: 8023 Price: $10.00
What would I do without such great readers and commenters?