The 4th Strike

A team of North Korean Special Forces has attacked the LORAN station on Attu Island in the Aleutian Islands and stolen a nuclear warhead that wasn’t supposed to exist. Special Agent Blake MacKay and SEAL Team 5 have been tasked with searching the North Pacific to track them down and recover the warhead.
After a disastrous rendezvous with a trawler that they thought contained the warhead, Blake and his team of SEALs discovered that the search was about to get much harder.
The nuke had been loaded onto an old Whiskey Class Soviet Submarine. Their biggest challenge: force the North Korean sub to the surface so Blake and his team can recover the nuke. If they sink the sub, the nuke will be impossible to recover.
With the help of the North Pacific fleet, Blake and his team of SEALs engage in an underwater game of cat and mouse as they tread through the icy waters, hundreds of feet below the surface in search of their prey.