Kevin understands his father is in heaven, and that he gained a family when he lost his dad.

Kevin Will, Jr. will never forget his first day of kindergarten, and neither will Tomball, Texas.

Nearly 100 officers from the Houston Police Department escorted the five-year-old boy on the 0.7-mile walk to Wildwood Elementary School in Tomball on Tuesday. The officers, including 13 mounted on horseback, came from as far south as McAllen, as far north as Fort Worth, and as far west as Odessa, the Houston Chronicle reports. There was even a helicopter escort.

Kevin's father, officer Kevin Will of the Houston Police Department's vehicular crimes division, was killed in an on-duty crash on May 29, 2011. Kevin Jr. was born three months after his father's death.

In the years that followed, the fallen officer's brothers in blue have never hesitated to step in and help out his wife Alisha around the home. From moving the refrigerator to hanging a flag above the garage, they happily take on the kinds of chores her husband would have done. They've even taken him to the zoo.

"It could be just about anything. We're just open for them," Houston police Sgt. Don Egdorf told the Chronicle.

So when Alisha asked if a few officers would be willing to walk Kevin Jr. to school on his first day of kindergarten, it wasn't an unusual request. But, as she told the Chronicle, she never imagined there would be such a turn out. "All I did was send a text saying, 'Hey, can I have some guys come to the house?'" Alisha said. "I thought four, five, maybe six."

"I think he was way overwhelmed today," Alisha told the Chronicle as she reflected on the extraordinary event. "But he was excited about kindergarten, and I talked to him about the officers being here because his daddy couldn't."

Alisha said Kevin understands his father is in heaven, and that he gained a family when he lost his dad.

"He knows," she said, "that they'll always be there."