I did 22 years in USAF Transportation.
There is no excuse for losing part of a load, except criminal negligence.
Every accident case I investigated involving loss of a load, trailer disconnect, broken or loosened straps or chains, or tie down points was identifiable in advance and preventable with ordinary due diligence. Being government military, being too cheap to buy the supplies needed was never a problem. It was always the driver being in too much of a hurry to do the job right, check or double check the load initially or periodically in transport.