I have to say I'm a little disappointed in my fellow Texans. We sat for about 45 minutes on the side of the road with the cab tilted and only had 1 person stop to see if we needed help (other than a State Trooper). If I see an MV, whether active, Guard, Reserve, or privately owned, broken down I'm going to stop and see if they need anything, if nothing but a bottle of water. The one guy that did stop offered to drive in to town to get us a hose clamp but by then Sarge was on his way.
Typically I gauge a civilian vehicle driver to determine if I need to stop. Young guy or guys I figure can handle themselves and have a cell phone to call for help. Older folks or women (I know, ageist and sexist) I'll generally see if I can lend a hand or keep them company until help arrives. We, as a society, have veered way off course when it comes to being neighborly. Or (careful or I'll start getting political) I was just too close to Austin to have real people drive by.