Missouri and Illinois have planned annual statewide tornado drills for Tuesday as part of Severe Weather Preparedness Week.

That’s where mass notification systems come into play, as well, as is the case with MillerCoors’ Fort Worth, Texas, brewery, which is located in Tornado Alley and sees about 25 tornadoes each year. The brewery employs 105 employees spread across 150 acres, and it brews 9 million barrels a year. It houses an on-site refrigeration system with 150,000 pounds of ammonia to assist with the brewing process.