This appears to be a civil-protection video, published by the Federal Emergency Management Agency a handful of days before the official evacuation order was declared.
Within the clip, standing within a plain-featured, well-lit room behind a steel table, a close-shaven redhead in a light olive shirt demonstrates the proper donning and doffing procedure for a gasmask, as well as providing general tips and information for proper NBC conduct.
Mask in hand and with an assortment of cylindrical filters arrayed upon the table, she demonstrates dawning, screwing in the proper filter, pressurizing the mask for an airtight seal, and repeatedly encouraging the viewer to "Remember, gentlemen, shave your chin first before even thinking about trying to put on a mask.
That goes for you as well, ladies.
All that hair—ponytails, pigtails, bangs, whatever—needs to go right out the window.
You can keep the eyebrows, though."

At the video's conclusion, the instructor outlines several tactics for protecting one's self from biological contaminants, including several methods for distilling water, sealing the edges of doors and window frames with masking tape, and formulating a makeshift NBC suit from multi-layered water-proof rubber storm coats, waders, gloves, and a liberal amount of duct tape.
Ultimately, the clip rounds off with a solemn warning that "all the equipment in the world won't protect you from negligence and stupidity, for all the keyboard warriors and self-proclaimed preppers watching.
All this gear is only meant to allow you to evacuate to a safer area, and that's all it'll do.
It won't let you ride out a catastrophe indefinitely, so it's still important that you keep your heads down and proceed to an evacuation gathering point if and when the call goes out."