A retired U.S. Army colonel is accused of killing a Colorado state trooper in a hit-and-run on the night of November 15. That former serviceman is Col. Eric P. Henderson, 52, who retired in June 2013. He’s being held on a $1 million bond.

This is a breaking story so stay tuned for updates.

Here’s what we know so far:

1. He’s Been Accused of Being Drunk Behind the Wheel

The Denver Channel reports that Henderson was booked into Douglas County Jail early on the morning of November 16. He’s being charged with vehicular homicide, leaving the scene of a deadly accident, DUI and careless driving causing death. He will appear in court on November 17.

2. State Trooper Jaimie Jursevics Is Survived by Her Husband & Infant Child

#BREAKING @CSP_News trooper killed while investigating accident on I-25 ID'd as Jaimie Jursevics pic.twitter.com/2cimvbPm5M — KDVR FOX31 Denver (@KDVR) November 16, 2015

The state trooper, Jaimie Jursevics, was killed while she was investigating the scene of an accident south of Denver, close to the town of Castle Rock, reports the Denver Post. According to a tweet from the Colorado Department of Transportation, the incident happened along I25, which was reopened at around 5:30 a.m. on November 16. The Denver Channel reports that Jursevics is survived by her husband and infant son. The Denver Post says that the trooper was mourned outside of her barracks in Castle Rock with officers lined up outside while a coroner’s procession carried her away.

3. Earlier This Year, He Took on a Major Energy Company in a Legal Fight

He lives with his wife, Jean, along Skalla Ranch Road in Peyton, Colorado, according to online records. Their land is used as a farm. In March 2015, the couple were involved in a civil action lawsuit along with their neighbors to prevent a wind farm from being built close to their land, reported KRDO at the time. Henderson told the station “We want to be good neighbors. We didn’t instigate this fight or this conflict but we won’t shy from it either.” Meanwhile, Jean Henderson said “We have saved up our money over the course of our career to retire in a beautiful community and that’s not going to happen. I just really think that dream is going to be crushed.”

4. He Was a ‘Pioneer’ in the Field of Missile Protection

Col. Henderson worked in the U.S. Army Space and Missile Defense Command where he was chief of the Operations Division, according to the U.S. Army’s website. Upon his June 2013 retirement, Col. Henderson was awarded the Legion of Merit award. Retired Army Brig. Gen. Kurt S. Story said at his retirement ceremony “Henderson is the type of person that people want to follow. A leader has a responsibility to the group, and Eric never loses sight of that. A leader has a responsibility to himself, and Eric doesn’t ever lose sight of that. A leader has a responsibility to the community — in this case the larger Army enterprise — our nation. Eric never lost sight of that. And lastly a leader has an obligation to ethics and morality — to our code, and Eric never lost sight of that. Eric is a great American. I’m proud of him, and proud to have served with him.”

5. He’s the President of a Colorado Horse Club

Since leaving the army, Henderson has worked for Military contractor Colorado Professional Services. According to his profile on their website, he works in the role of program manager. He’s referred to as a “pioneer in the military applications of Space and Missile Defense for the US Army, the Joint Community, and our nation’s allies.” He’s also the president at The Mountain and Plains Appaloosa Horse club.