Nicholas Tate III is the Domestic Policy Adviser for the President of the United States.
Nicholas Tate III was part of the President's group journeying to Area 7 on Marine One. Before landing, Tate attempted to ask out Elizabeth Gant, as well as give her an expensive necklace for her birthday. While undettered by her protest that she was already seeing Shane Schofield, Mother helped Gant to get away from him. While at Area 7, Tate tried his luck with Gant again, offering her the chance to join the President's staff while they waited, though again declined.
When Schofield's team attempted to retrieve the Football, Gant and Elvis used Marine One as part of the distraction, and in doing so found Tate and Hagerty, and took them with them when they retreated. They rejoin with the President, and attempted an escape from Area 7 on the X-Rail, but Tate, along with many others, are forced to abandon it because of a set of enemy grenades.
When Gant comes up with a plan to to stop the transmitter on the President's heart, Tate and Hagerty are left behind in the Level 1 Hanger, but the others are captured by the escaped prisoners. Tate wondered if they were alright, before noticing that Hargerty had disappeared, captured by another escaped prisoner.
Tate panicked and attempted to search for Hagerty, only to run into a family of bears on the ramp. He then ran back to the mini-elevator, where Schofield, the President and Mother were coming down, and warned them about the bears, but they were dubious. He traveled with them to Area 8 on the X-Rail, staring absently at his cell phone before making a call to his stock broker. However, a DIA Agent named Fairfax intercepted his call, and his phone was taken by Schofield to talk to him.
Tate decided to stay in the relative safety of Area 8, and was likely later found by friendly forces when the threat was over.
Nicholas Tate III kept trying to ask out Gant and tried to buy her an expensive neck;ace for her birthday, only for her to get Mother to distract Tate. He also tried to invite her on board the helicopter when they landed but she remained with the other Marines. After the disaster at Area 7, Tate presumably lost interest with Gant learning that her and Schofield's relationship had become an actual relationship.