Even government agencies are not immune to the Christmas spirit. The Trump administration had some fun for the holidays on Sunday, Christmas Eve.

It’s tradition for a number of agencies to add to the festivities in unique ways — the Defense Department’s Santa Tracker is particularly beloved — but the Trump administration was even more likely to get into the holiday spirit during the president’s first Christmas in office.

President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE started preparing for the holidays early, with a campaign promise to say “merry Christmas,” rather than “happy holidays,” an inclusive greeting he has criticized as too politically correct. As president, he started telling crowds “merry Christmas” as early as October.

Here are some of the uniquely festive ways his administration is enjoying the holidays.

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Defense Department's Santa Tracker

The North American Aerospace Defense Command (NORAD) launched its Santa Tracker for the 62nd year in the early hours of Christmas Eve. On Sunday afternoon, the president and first lady Melania Trump Melania TrumpThe Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power FBI director casts doubt on concerns over mail-in voting fraud Trump: 'We could hardly hear' boos, chanting at Supreme Court MORE are taking calls as part of NORAD’s hotline. Former first lady Michelle Obama took calls at NORAD headquarters the past few years.

Looking forward to helping kids track Santa today with @NoradSanta! Wishing everyone a very Merry #Christmas Eve! — Melania Trump (@FLOTUS) December 24, 2017

Transportation Department approves Santa travel

The Department of Transportation earlier this week “approved” Santa’s application “to engage in air transportation to various points throughout the United States on the night of December 24-25, 2017.”

“The applicant generally asserts that he performs a vital and specialized air transportation service,” according to documents provided by “Kris Kringle" and released by the agency.

Interior Department aids reindeer "warm up"

The Interior Department is reindeer spotting in the national parks.

Reindeer warm up: Looks like this one is getting ready for tonight’s big ride! @BeringLandNPS #Alaska pic.twitter.com/JPZagphBlv — US Department of the Interior (@Interior) December 24, 2017

Agriculture Department issues permit for Santa's reindeer

The Agriculture Department announced in a press release earlier this week that it was ensuring none of Santa's reindeer are stopped at the U.S. border, issuing "a movement permit to Mr. S. Claus of the North Pole, a broker with Worldwide Gifts, unlimited."

The permit allows the reindeer to "enter and exit" the country "through or over any U.S border port" on Christmas Eve and Christmas day.

"It’s the season of giving and joy. Here at USDA we don’t want anything to delay these very important reindeer at our borders,” Secretary of Agriculture Sonny Perdue George (Sonny) Ervin PerduePerdue has found the right path in National Forests Democrats seek clarity on payroll tax deferral for federal workers USDA extending free meals for kids through end of the year if funding allows after criticism MORE said in a statement, adding that the USDA "waived all applicable fees to help ensure a smooth trip on Christmas Eve night."

President Trump thanks the troops

Trump also sent a message to various branches of the military on Sunday, participating in a video conference call with representatives of the Air Force, Marines, Navy, Coast Guard and Army from his holiday at the “Winter White House,” Mar-a-Lago, in Florida.

Trump's Christmas Eve has not been controversy-free. He sent several controversial and critical tweets during the day, including retweeting a photo of what appears to be the CNN logo in a splatter of blood on the bottom of the president's shoe. The retweet was criticized by some in part because of its timing.

- Updated: 7:43 p.m.