Michael Dorn, executive director of Safe Havens International, a nonprofit campus safety organization, wasn’t alarmed that Arredondo remained in charge on Tuesday. But Dorn was concerned that the Uvalde Consolidated Independent School District, which includes Robb Elementary, relied on the “Standard Response Protocol,” a process for how students respond during an emergency. It is a nationally recognized method developed by the “I Love U Guys” Foundation focusing on school safety, according to the foundation’s website.

Dorn argued that the protocol, which is popular because of its emotive marketing and ease of implementation, is an “extremely unsound approach” because he claims it regularly fails to train school employees on how to properly lock down a classroom.

“These mistakes were made long before this event,” Dorn said. “We’ve been telling clients not to use the SRP for years,” Dorn said.

John-Michael Keyes, executive director of the “I Love U Guys” Foundation, defended the program as “basic guidance based on sound factual conclusions.”