The original plan was to attack the compound with B-2 stealth bombers, but was determined to be operationally risky. According to the report, the president was wary of attacking the location with two B-2 stealth bombers out of concern that it would reduce the building (and all evidence inside) to rubble. The president and his team, instead, asked that the plan be revised to allow for a Navy SEALs unit to be transported in via helicopter. Training for that took time. The Navy SEALs unit “replicated the one-acre compound at Camp Alpha, a segregated section of Bagram Air Base. Trial runs were held in early April,” Marc Ambinder of the National Journal reported.