One school district in the Amarillo, Texas, area isn’t messing around when it comes to potential intruders.

The Shamrock Independent School District has added two signs warning troublemakers that staff members are armed and may use force to protect its 450 students.

Texas School District Arms Staff, Posts Signs Warning Potential Intruders

(Credit: KHOU-TV)

Texas School District Arms Staff, Posts Signs Warning Potential Intruders

(Credit: KHOU-TV)

Texas School District Arms Staff, Posts Signs Warning Potential Intruders

(Credit: KHOU-TV)

In addition, the district has installed 30 security cameras as well as an intercom system and bulletproof windows.

According to KHOU-TV in Houston, most parents are happy with the stepped-up security.

Here’s a report from KHOU-TV: