Just one week after visiting with Prince Harry at Kensington Palace, President Barack Obama and First Lady Michelle Obama have sent the royal a special message about his upcoming Invictus Games in Orlando.
"Hey, Prince Harry. Remember when you told us to bring it at the Invictus Games?" Michelle asks in mock-threatening tone in the video.
President Obama then chimes in, "Careful what you wish for!”
The couple is backed by a group of tough-looking servicemen (one of whom throws down the gauntlet with "boom") and women, seemingly ready to take on the U.K. team at the Games, which kicks off on May 8.
But Harry proved he wasn't intimidated by the Obamas' challenge in a special video of his own – with an incredible cameo from his grandmother, Queen Elizabeth!
In the video, Harry is seen showing his grandmother some of the Invictus Games' competitors from last year when he receives a text message from Michelle (a.k.a. F.L.O.T.U.S) – complete with "Hail to the Chief" ringtone.
After they both watch the video, the Queen playfully shrugs her shoulders, looks at her grandson and says with a smile, "Boom, really? Please."
Harry, fighting back a laugh, then turns to the camera with a "boom" of his own!
Source: Kensington Palace / Twitter
Alongside Dr. Jill Biden, the First Lady will be on hand to support Team USA during Harry's landmark Paralympic-style games for wounded veterans at the event.
Praising the prince's lead role as an advocate for military veterans, Mrs. Obama “told PEOPLE exclusively that she and Dr. Biden are set to cheer from the stands at this year's games.
"With Prince Harry's leadership, I hope that the world will join us in celebrating these incredible athletes and supporting all our service members, veterans, and their families," the First Lady said.
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"I'm excited to cheer on the Warriors of Team USA in Orlando as they represent our nation and their brothers and sisters in arms," she said.
Michelle added that service members and those who care for them are "some of the most courageous, resilient people I have ever met" and their participation in May's games is an "excellent example of their determination, commitment and grit."