SIOUX CITY, Iowa (KCAU) — Bishop Walker Nickless and the Sioux City Cathedral Parish are hosting a special mass to honor first responders.

With a name pulled from the traditional color of law enforcement uniforms, Blue Mass dates back to 1934.

“The Blue Mass is a solemn tradition that stands as a testament to our unwavering support for those who commit themselves to safeguarding our communities. This Mass, to be presided over by the Most Rev. Walker Nickless, Bishop of the Diocese of Sioux City, serves as an opportunity to honor the unwavering dedication, valor and sacrifice of first responders,” said Father David Esquiliano, pastor of the Cathedral Parish and chaplain for the Sioux City Police Department.

The event will be on Sep. 29 at 5 p.m. on the same day as the Feast of the Archangels – Sts. Michael, Gabriel, and Raphael. St. Michael is known to be the patron saint of law enforcement.

Area first responders and those working in the emergency response fields and their families are encouraged to attend the mass whether they are Catholics or not.

First responders and their families planning to attend can RVSP by emailing

The Cathedral Parish also plans to host a White Mass for healthcare workers on Oct. 5 and a Red Mass for workers in the legal profession on Nov. 6