Donald Trump fist pumped on his way to a 9/11 memorial service and it's not going over well

Today marks the 17th anniversary of Sept. 11, 2001, and Donald Trump seems... extremely pumped?

As the world remembers the thousands of people who lost their lives in the attack on the World Trade Center, President Trump flew to Johnstown, Pennsylvania with Melania this morning to attend a memorial event. But his perplexing facial expression and his choice to pump both fists in the air on the runway were an odd choice for such a solemn occasion.

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The Trumps were on their way to a 9/11 Memorial Service in Shanksville, PA, and many people feel the tone-deaf gesture and strangely excited vibe the president gave off as he greeted assembled supporters was wildly inappropriate.

Twitter users, including Chrissy Teigen, were quick to scrutinize the photo, calling Trump out for his chipper and insensitive behavior on national day of mourning.

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Earlier this morning, Trump tweeted a simple "!7 years since September 11th" with an exclamation point.

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He also tweeted a message to Rudy Giuliani and a few thoughts on other, unrelated things, like collusion with Russia.

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How hard is it to write a thoughtful message to the families of those lost in the attack, thank the first responders, encourage America, or at the very very least, not pump your fists?