KGO ABC World News Tonight With David Muir March 24, 2020 00:36:00
>> reporter: the chief of surgery at columbia university warning in a memo to staff the hospital is burning through 40,000 masks every day. on a normal day, they use 4,000. cornelia griggs is a pediatric surgeon at that hospital and a mother of two. >> we're running into potentially crisis situations, having to make the split-second decision. am i going to run into this room to save this patient, or am i going to take the time to scramble and find a mask? >> reporter: governors calling on the federal government to push manufacturers to make needed supplies, something the president said days ag...