An off-duty police officer traveling to Houston to help victims of Hurricane Harvey received a little extra encouragement from two of his biggest supporters: his young children.

Sgt. Patrick Swanton with the Waco Police Department in Waco, Texas, shared the heartfelt letter Monday to honor those who were traveling help rescue those who are stranded due to flooding.

"Dear Daddy," the letter began. "I hope you don't get hurt, but I hope you help other people that need it more than you do. I hope no one gets hurt more. I hope everyone gets away [from] the hurricane."

"I love you, Scott & Makenna," the letter read.

According to Swanton, the letter was written by the unnamed officer's daughter, whom Swanton knows personally.

"As our off-duty officers head into harms way to help with hurricane Harvey rescues, we thought we'd share with you one of their family members thoughts," he wrote in the caption. "And let me say this, I know this young lady (the Officers [sic] daughter) personally and know that it took everything that her daddy could do to keep her from loading up with him to go."

Volunteers from all across the nation have traveled to Houston, where the weather conditions are expected to get worse before they get better. Thousands of successful rescues have already taken place, but many more residents are still awaiting aid.

President Donald Trump traveled to Texas on Tuesday morning where he plans to visit the affected areas. He wrote on Twitter Sunday evening, "Floods are unprecedented, and more rain coming. Spirit of the people is incredible."