Do you mean the truck? The pulley at the top of the main flagpole on a military base?
I haven't verified this, but fellow recruits confidently informed me during Basic Training that either the truck or the base of the flagpole contained <UL TYPE=SQUARE>
A M1911 and one round
A razor blade
A box of matches
</UL>
The idea being (whispered in breathless tones) that the last person on the base would lower the flag, shred it with the razor blade, set fire to it and then off himself with the pistol.
Since I haven't seen the FM or TM on Stands, Last, Heroic, I pretty much file this away under Urban Legends (Military).
LawDog
[This message has been edited by LawDog (edited September 30, 2000).]