"I was doing my closing paperwork ... and I heard a banging on the door, which led out to the outside parking lot. Normally that's someone coming in to do a last-minute drop-off ..." But in this case, the thing being dropped off at the last minute was DANGER!
"It was one of our lawn associates, and he was kind of freaked out. Saying, 'I need to call the police!'"
Dillon asked, "What's going on?"
And his co-worker responded, "Some guy is kidnapping some kid in the parking lot."
Dillon would later learn that the associate had seen a strange man assault a woman in the parking lot: "... she was in the driver's seat of the car, and he basically pulled the kid out of the back window." Dillon got out to the parking lot in time to see the kid's mom "in hysterics, screaming, 'Someone please help me, he's taking my kid!'" Considering this whole situation sounds like the setup to a particularly dark Lifetime Original Movie, you probably understand why Dillon went ahead and assumed a child was in real danger.
He quickly spotted the abductor, whom he described as "obviously drunk, with a kid in his arms, saying something I couldn't make out because his words were so slurred." Dillon's co-worker called the police. "They told us don't touch him, don't engage him, but keep an eye on him so we know where he is when [the police] show up." And so Dillon followed the strange man, at one point just "five to ten feet away" (so he could get visual confirmation that the kid was uninjured). He kept the man in sight and kept the police informed, until a block and a half later they showed up on scene and rescued the kid.
Here's where we note that this wasn't technically a kidnapping in the usual sense: "The drunk man ended up actually being the child's father, and after they separated and calmed everyone down ... the woman never ended up actually pressing charges." But from Dillon's perspective, it sure as shit looked like a bad situation. And it sounds like he responded appropriately. He didn't, like, try to dropkick the baby free of the captor or anything. He just followed the guy and kept the police informed.