cbs dr. jon lapook speaks with the c.d.c. director, rochelle walensky, for her only television interview. reporter: was the agency up tothe task of handling this pandemic? o donnell: gun violence in america. after five people are shot and 100 rounds fired in philadelphia, cbs elaine quijano is there tonight in one of the nation s deadliest cities. and a trip into the history books. cbs kris van cleave is on a flight honoring a pilot and pioneer. this is the cbs evening news with norah o donnell, reporting from the nation s capital. o donnell: good evening, and thank you for joining us on this wednesday night. tonight, donald trump s former vice president is speaking out for the first time since the search of mara-a-lago, and it comes as the january 6 committee is continuing its work. tonight the panel may have a new witness. mike pences says he would consider testifying if he is asked. you may recall there was a pressure campaign led by trump for pence