Is NASA even more insane than Bill Gates is with the spraying chalk (a toxic inhalant as described on its MSDS sheet) with the barium spray!?

Barium

"Warning.
May be harmful if swallowed. Avoid contact with skin, eyes or clothing. Wash thoroughly after handling. "

"Special Firefighting Procedures:
Use water to cool nearby containers and structures. Wear full protective equipment, including suitable respiratory
protection. "

[link to www.integrachem.com]

Are they trying to chemically burn a bunch of children and wildlife or some dumb shit?