Memorial Day (Mitch Rapp #7) by Vince Flynn

Fighting terrorism on foreign ground, CIA superagent Mitch Rapp does whatever it takes to protect American freedom.
CIA intelligence has pointed to a major terrorist attack on the United States, just as the nation's capital prepares for a grand Memorial Day tribute to the veterans of World War II.

Racing to Afghanistan, Mitch Rapp leads a commando raid on an al Queda stronghold in a remote border village—and defuses plans for a nuclear strike on Washington. The crisis averted, the special ops work is done. But Rapp knows, in the face of a new kind of enemy, nothing is as it seems—and it's up to him alone to avert a disaster of unimaginable proportions.