With the pullout from Afghanistan looming and need to reduce the fed. deficit, there will be increasing pressure to reduce spending on advanced weaponry, esp. big ticket items like subs and other advanced ships.
If GD is unable to win an appeal in the A-12 court case, then GD and Boeing will be liable for $2.6 billion to the US Navy.
About 68% of GD's sales come from the US Government, making GD dependent on the stability of the largely unpredictable fiscal responsibility of the government.
With 52% fixed price contracts and cost difficulties with GD's NASSCO shipyard, GD is more vulnerable to costly delays and possible contract terminations.