BAKER
Cocked and Loaded refers to a state of readiness with a semiauto pistol such as a 1911:
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Hammer cocked
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Loaded round in chamber
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Locked (safety on)
DJT was saying the safety was off, therefore the gun was literally cocked and loaded.
Locked and loaded, on the other hand, refers to an M1 Garand, where the bolt is locked back so the clip can be loaded.