Memorial Day - Vince Flynn

When a spike in CIA intelligence suggests a major terrorist attack planned for Memorial Day, the president orders Mitch Rapp, his top counterterrorism operative, to pull out all the stops.
Rapp heads for Afghanistan where he leads a secret Special Forces unit on a daring commando raid across the border into Northern Pakistan. Their target: an al-Qaeda stronghold. Within a subterranean room, they discover a treasure trove of maps, computers, files and bills of lading for multiple freighters heading to US ports - all pointing to plans for a catastrophic attack on Washington DC.
Information is quickly relayed back to CIA headquarters, and a nuclear emergency search team scrambles to the scene. In a few hours, the freighters have been located and the danger averted. Or has it? To Mitch Rapp, the whole operation seemed just a bit too easy. Following his instincts on a quest to unearth the whole truth, Rapp makes a truly terrifying discovery - and with Memorial Day closing fast, he must find a way to prevent a disaster of unimaginable proportions