While Aaron (link=nm384148) and the President are speaking in the hallway about the leaked video, Aaron's lapel pin changes position several times.
When Emily (link=nm268075) enters the Oval Office to speak with the President, the grandfather clock reads 8:41. When she leaves several minutes later, the time is exactly the same. However, when the President looks up at the clock after the door closes behind her, it's nearly 9:30.
All United States Armed Forces must wear some type of head protection while riding/operating military vehicles. The most common type of headgear is the Advanced Combat Helmet, which is a combat helmet made of Kevlar. Most of the soldiers seen riding in the Humvees and LMTVs were wearing the cloth Patrol Cap.
When the Minnesota National Guard arrived at the airport, the uniforms of the soldiers, the ACU-UCP, was worn incorrectly. More so, that uniform (worn by Army personnel), should have it's collar folded down like a normal collared shirt. It was shown that Major General Munoz had his collar wrapped around his neck. Also, the Patrol Cap (PC) should be worn canted more downward.
In the War Room, when Atwood informs Kirkman of Hannah's theory about the Capitol bombing, he calls the undetonated bombs "unexploded ordinance". An ordinance is a law or legal decree; what he meant to say is "unexploded ordnance".