https://redstate.com/streiff/2024/10/12/investigation-reveals-drowning-of-two-navy-seals-during-a-boarding-operation-was-entirely-preventable-n2180468
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This is a classic case of "for want of a nail." If you've been in any large organization, particularly the military, you've seen it in action. Small problems get "assumed away" by preparing for larger problems. A high operational tempo encouraged familiarization and training with personal flotation gear to be ignored. No one complained because everyone thought they could stay afloat long enough to be rescued. In my experience, the higher the level of training, the more likely it is that small things not directly related to mission accomplishment get ignored. .."