Who here is saying it was a drill?
The guy in the article is saying it.
What's most curious about the Texas incident is that first you had a fire. The fire attracted first responders. Then, after responders arrive you had the fatal explosion killing many of them. This is a trademark of attacks in the Middle East. They bait first responders to the scene, THEN they blow them to bits with a follow-up detonation. This is what happened in Texas.