It's easy to take the work of law enforcement officers for granted.
For most of us, encounters with the police are rare and inconsequential - a traffic violation or some minor offense.
Since the vast majority of us don't start any trouble, we often don't stop to think that each day law enforcement officers put their lives on the line to protect us.
Tuesday night, we got a grim reminder in West Virginia of just how dangerous that job can be.
One state trooper was shot and killed and another critically injured - both from the Clay County detachment - when they stopped a motorist who was driving erratically along I-79.
According to state police Sgt. Mike Baylous, "Sometime during the traffic stop, the suspect obtained a weapon and opened fire."
A manhunt followed. Deputies from Clay and Roane counties tracked down the suspect and exchanged gunfire.
The gunman was killed and a Roane County deputy was injured, though not seriously. A bulletproof vest may have saved his life.
One trooper dead, one trooper seriously injured and one deputy wounded.
Gov. Earl Ray Tomblin said that he and his wife, Joanne, "hold them and their families in our prayers, and ask all West Virginians to join us."