- CNN gets exclusive access to U.S. aircraft carrier involved in joint military exercises with S. Korea
- U.S. commanders say annual exercise serves as powerful deterrent to North Korea
- But this has not stopped Pyongyang from flexing military muscles
Aboard the USS John C Stennis (CNN)With a deafening roar of jet engines and an explosion of steam, an F-18 Super Hornet catapults off the deck of the aircraft carrier, and veers up into the sky. Seconds later, another fighter jet shoots out down a parallel runway.