matt gibson's cowboy hats now sit next to all things eclipse. not bad business. >> no, very good business, as a matter of fact. >> reporter: the town prepping to swell by nearly ten times. >> have you ever had to plan for an event of this magnitude of this scale? >> no, no, not in kerrville, no. this is just out -- this is above and beyond anything. all of our safety people have been planning for so long, and they've got our backs. they've got this down. >> reporter: but come monday, all eyes will be looking up. morgan chesky, nbc news, kerrville, texas. >> and up next for us tonight, machine therapy? some think there's a role for artificial intelligence in mental health. noticing things that seemed...off. she developed agitation that may happen with dementia due to alzheimer's disease. sometimes she'd fidget with her fingers, get suddenly overwhelmed, and even throw things. and that was just never her. so we asked her doctor what else we could do. rexulti is the only fda-approved medication proven to reduce agitation symptoms that may happen wi