Shock World: Virtual Reality Games

In a near future, after an event of great disaster, America is left crippled and starts to rebuild civilization.
An unknown enemy wishes to take over, using a team of spies to begin his conquest.
Those who know about his plan begin a training program with young adults to prepare them to oppose this enemy. Virtual Reality programs are used to train these possible junior spies.
Book One in the Novel with Virtual Reality Games as the first part.