NCIS New Orleans also just had a recent episode about a bio-weapon attack attempted. Had to be filmed before the LA Mil Op that is rumored to have been about the a biological weapon.
See parallels of NCIS New Orleans season 5 episode 13 - 'X' air date: Feb 12, 2019 and the MIL choppers exercise/operation on Wilshire in LA, suspected to be about biological weaponry.