New CTU analyst Mariana Stiles says her cousin was Edgar Stiles. Fans of the original show would know that Edgar Stiles was a reoccurring analyst who was friends with Chloe O'Brian.
Just after Eric drops Nicole off with Isaac, the clock shows 12:35 and then 12:40, but about 5 minutes later as the scene starts with Nicole talking to Eric, the clock shows 12:30.
The room the school students are watching the video about the creation of the atomic bomb is room 204... this could be said as "20 4", or "Twenty Four"... "24"