winds, and flash flooding. the threat expected to last throughout the night, and what millions could face for the morning commute. nearly 2,000 flight cancellations already, and that number is growing. in the southwest, dangerous heat with no end in sight. rob marciano times it all out. the urgent manhunt for a murder suspect in pennsylvania. officials say he has military training and self-taught survivalist skills. they claim they found stockpiles of supplies or campsites they believe are associated with him and consider him armed and dangerous. and in the west, authorities near sacramento desperately searching for another murder suspect, who escaped overnight. alex presha is standing by. president biden touching down in the uk ahead of a crucial nato summit after saying ukraine is not yet ready to join the alliance, and the growing divide over cluster munitions. the biden administration is defending its controversial decision. what president zelenskyy told our martha
she s with me 24/7, whether it s on shift at the station, home. want to go find someone? reporter: shawn says her desire to search on practice missions is unmatched. search. her ability, zero fear gives her the ability to run something like this with no hesitation. reporter: nanci s tale is just one of many inspiring stories about the power of new beginnings. we ll go anywhere any time that we re needed. we re ready to go at the drop of a hat. thanks so much for watching. i m linsey davis. for all of us here, good night. dion: next on abc7news at 6:00, bon voyage. a cruise ship stuck for days in san francisco finally sets sail less than two hours ago. plus, cleaning up after the blast. neighbors in san francisco talk about the aftermath of a pg&e vault explosion. cripes you will be subject to
always given their just rewards for their painstakingly precise search missions, at the orange county fire authority in california, there s a new hire who is happy to settle for a biscuit. good girl, good girl. reporter: nanci, a 2-year-old lab mix, is all geared up in her goggles doing daily drills to pass her upcoming certification to be deployed to disaster sites. finding the people in minutes compared to hours, which is why we use the dogs, is critical. reporter: for this canine just a year ago, this new start may have seemed far-fetched. the national disaster search dog foundation found nanci at a shelter in missouri and brought her here to orange county. their mission is to rescue shelter dogs, train them, and then match them with first responders. their dogs go from being rescued to being the rescuers, and now after more than two decades as a firefighter, nanci is firefighter shawn monville s first time being partnered with a dog.