On Sunday, CNN reported that the CDC held a video conference with approximately 800 staff members to discuss the traumatic event and allow them to ask questions. Staff said they felt like "sitting ducks" as bullets whizzed just over their cubicle walls and they dove for the floor.

Fishing the Kenae with Ninilchik Chief Ivan Encelewski Chairman of the Cook Inlet Tribal Council and Council President Gloria Oneil The 1948 photo is Ivans grandpa Chief Larry Oskolkoff Sr. with a skiff load of King salmon from a Cook Inlet fish trap. The Kenae Kings are also in… pic.twitter.com/aVtkZTkI36

This story was updated after publication to reflect Health and Human Services Secretary Robert F. | An apparent targeted attack on the CDC has left the public health community shaken and frustrated with leadership they say is fanning the flames.