Saints Row IV sees players becoming the President of the United States, and as President you can do whatever the hell you want. So the Commander in Chief Edition players will get as a free upgrade when you pre-order the game in North America is a fitting tribute to your role as the leader of this great nation.
For instance, the Screaming Eagle is a robot eagle jet thing that will fire rockets and invoke a sonic scream attack on enemies. Then there's the 'Merica gun, which looks like it's every single gun strapped together like the flamethrower, rocket launcher, and the new dubstep gun. Okay! The bonus pack will also give you the Uncle Sam uniform so you can look like the perfect President all while causing destruction.
Saints Row IV will be out on August 20, 2013 in North and Latin America, and August 23, 2013 worldwide for the Xbox 360, PlayStation 3, and PC.