the tab of steel in brady harvel's hands. your personal dog tags? >> yeah. the ones i deployed with. all burned now. >> reporter: wow. >> after i deployed, i gave them to my dad. he had them hanging in his man cave. >> reporter: it took him two hours of digging to find his most precious possession. you got goosebumps right now. >> yeah, i do. it's crazy. it's mind-blowing. >> so glad he found those tags. and matt with us live again tonight. and matt, there are now reports that downed power lines and exploding transformers are being investigated as one possible cause here for at least some of these fires? >> reporter: that's right, david. pg & e, that's the power company here, and you can see them behind me, reinstalling downed power lines. the company says in a statement that there were equipment issues at the time the fire here started, caused by, quote, hurricane-strength winds, but that's just one possible cause for the 22 fires burning in california right now. david? >> matt gutman leading us off again tonight. matt, thank you. meantime, the army of firefighters battling these flames in california are working