Wearing dress uniform, members of the Harris County Sheriff's Department were joined by officers of the Houston Police Department in the Blue Mass at the cathedral of the Sacred Heart.
Daniel Cardinal DiNardo was the celebrant.
"It's to put together just as God's providence happens to angels. In some ways, in our civic providence, those who protect us are, in their own way, a kind of angel presence. And to pray for them, thank them for their work and ask God's blessing on it."
He says it is an asking of God's blessings upon the work of those who protect us. Started in the 1930s, the celebration occurs on the feast day of the arch-angels Michael, Gabriel and Raphael.
"Saint Michael is the patron saint of all peace-keepers and law enforcement has adopted him as our patron saint."Î¾
That's Harris County Sheriff Adrian Garcia. He says men and women who wear the badge know the dangers associated with their job.
"You'll find many law enforcement officers wearing the medallion of Saint Michael. So its something that's been a strong tradition in law enforcement, as well as in the military. All the deputies named Michael or Michaelene, we'll be keeping them in our prayers."
Members from other law enforcement agencies were also in attendance.
PH, KUHF-Houston Public Radio News.