 Pentagon Deputy Press Secretary Sabrina Singh. This was done out of an abundance of caution. The security level has been raised to Charlie, the second highest position. That means some form of terrorist action is likely. I'm J.J. Green. Air combat is not what it once was. America must act now to secure its advantage in the skies. To do that, it needs a highly capable force multiplier that won't risk pilots' lives. The answer is collaborative combat aircraft.