Season 4 opens with Jonas and the team on an undercover mission with a female soldier, while on the return trip home they get disturbing news that there has been major attacks on the president, vice president & president elect.
The team are to report and find the elect, they soon discover there own soldiers or so they think are to blame for the ambush.
Back on base the wives are ordered to pack some belongings and go with the MP's, there informed of the terrorist attack on the president elect and shown that these ' terrorist's ' have been watching them to use them against there husbands, Col Ryan decides they are to leave the base under different identity's.
The team with the help of the female soldier rescue the pres elect but there troubles are not over, Sergeant Kayla Medawar joins the Unit and helps the wives leave the base whilst the guys go off to track down the terrorists.
One startling thing to come out of this episode is that Mack has finally found that Tiffy and Col Ryan were/are having an affair and he's now gunning for Ryan, should be interesting as to what happens.