A Jefferson County, Colorado off duty deputy is either a really amazing shot, or he’s luckier than a lotto winner.

“I don’t know that that can be done again,” Jimmy Graham, instructor at Active Shooter Response Training Center, told KUSA.

Graham and others are marveling at Deputy Jose Marquez’s miraculous shot Jan. 26, when he was visiting his girlfriend’s apartment and approached by two armed robbers. A shootout ensued, and one of the deputy’s rounds struck the barrel of one of the suspect’s handguns, traveled down the barrel, and lodged against an outgoing bullet.

The shot rendered the gun useless, and Marquez took several shots to the chest and abdomen. One of the suspects, Jhalil Meshesha, was arrested with a leg injury while the other has not been identified, the Aurora Sentinel reports.

On Wednesday, Arapahoe County Deputy District Attorney Rich Orman determined that Marquez acted appropriately considering the circumstances.

“Deputy Marquez reasonably believed that his life was in danger and acted reasonably in shooting Meshesha, and that he used an appropriate level of physical force,” Orman wrote in a letter to Jefferson County Sheriff Jeff Shrader and Aurora Police Chief Nick Metz, according to the news site.

“I further find that Deputy Marquez’s actions were justified and he did not violate Colorado law.”

Jefferson County Sheriff’s spokesman Mark Techmeyer said Marquez is still healing from his wounds and has not yet returned to work.

Police are describing the shot as “one in a billion.”

“I’ve never seen an instance where the bullet actually traveled backwards back down and contacted the bullet,” Graham told KUSA.

The news site goaded Graham into attempting to recreate the seemingly impossible shot, and he managed to hit the barrel of the simulated shooter from about 10 feet away with three quick rounds fired from the hip.

But Graham said lacing a round directly down the barrel in a life or death situation is a totally different thing.

“I consider myself a decent shot, but under those conditions, I don’t know that that can be done again,” he said.

While it’s unclear whether the odds of shooting down the barrel of an opposing gun are actually “one in a billion” or something more, the odds of winning an average state lottery jackpot are roughly one in 100 million, according to WikiHow.