I normally don't post on new hire type stuff primarily because I'm far removed with the process but a couple comments are appropriate.
- why SFO? It showcases the United maintenance/overhaul facility that was and still is the envy of the industry even after being gutting by Tilton.
- why just military? I think baseball and Ottolillienthal pointed out with the premerger CAL management violating of CAL pilots CBA and USSERA law that has filtered to the new United on another thread on this forum. There will likely be consequences and the lawyers and PR people are likely trying to get in front of the bad publicity and mitigate a little of the courts judgment by holding this Veteran recruiting event.
It's also possible the company is trying to avoid striping the Regional Carrier subcontractors of pilots needed for mainline feed.
A note for the the "enlisted veteran" - don't assume you have to be an "officer and gentleman" for this program. Over the years United has hired enlisted veterans from WWII, Korean, Vietnam and the current Middle-East conflicts. Don't eliminate yourself - let United make that determinations. In some cases you will likely be as qualified or better qualified than the O&G group.