Police officers sacrifice their blood, sweat, and tears every single day, working to keep our communities safe.

One group here in Rapid City thought of a unique way to pay tribute to those who have made the ultimate sacrifice.

Jason Ocilka, Pennington County Sheriff says, "In the CrossFit Community, that's kind of something that they do across the board. If you have military personnel, firefighters, or law enforcement that died in the line of duty, they usually set up some sort of hero workout just to honor them."

Black Hills CrossFit started the hero's workout three years ago after two Rapid City police officers were killed in the line of duty.

Will Williams, co-owner of Black Hills CrossFit says, "At Black Hills CrossFit we have a member who is a member of the Sheriff's Department who came up with this idea and this workout to honor Nick Armstrong and Ryan McCandless, who were killed in the line of duty in Rapid City in 2011 so it sort of originated naturally here."

When Jason Ocilka with the Pennington County Sheriff's Office, a long time member of the CrossFit gym, pitched the idea to the owners, he said they jumped on the idea.

Ocilka found a creative way to honor the two officers who were shot during a routine stop back in August of 2011 in true tough CrossFit fashion.

Jason Ocilka says, "What you start off with is 2 laps around our building which is about 250 meters carrying two kettle bells, one in each hand, and then after that I use the two officers ID numbers 577 and 639, I use that for the reps of the workout and just kind of integrated those numbers in."

CrossFit is a high intensity interval training workout designed for people to get the most out of a quick workout.

The participants that completed the workout this morning said it definitely wasn't fun, but sacrificing their time and sweat made this workout especially meaningful.

Kelly Bruhn says, "When we do them, they're always hard, they are always hard workouts for a reason, because they have passed away and we want to do something to honor them."

Williams says, "It's just a way to pay tribute to people that have made a bigger sacrifice than I have, you know. I have a cushy life and it's thanks to people who made sacrifices for me. This is the way in CrossFit, we honor the people that have made that sacrifice."

Owners say they had a great turnout this year with many current gym members and even some local law enforcement taking part , all to honor officers Nick Armstrong and Ryan McCandless.

They hope to continue the tradition every year.