Keesler Air Force Base in Biloxi has lowered its alert status from Delta, the highest, to Charlie.
However, officials say security will remain very tight. Those trying to enter the base can expect delays as vehicles are searched.
Both the Seabee Base in Gulfport and Naval Station Pascagoula remain at alert condition Delta.
The tight security caused heavy delays for commuters on Wednesday morning. Keesler officials will open the Judge Sekul gate on Thursday to help ease the strain. KAFB will also stagger work schedules to reduce the wait to get in.
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