When you watch NCIS Season 14 Episode 19 online, a Marine dies of botulinum toxin injected into his system while he was escorting a Vietnam veteran on an Honor Flight trip to Washington, D.C. The team attempts to get the veteran's help in investigating the case, but the man proves to be cantankerous and uncooperative. Vance puts Reeves on keeping an eye on him while the rest of the team tries to figure out who would kill this Marine and why. The situation is complicated when they discover that the Marine was involved with a crisis hotlne that had suffered a breach in which its call logs were erased. Meanwhile, Bishop and McGee hear a rumor that Quinn and Torres were involved in a brief but torrid affair at FLETC, and they decide to figure out if there is any truth to the salacious gossip. Were their colleagues "together," even for a short while? Will they learn the truth? How will Reeves manage to keep his temper with the crotchety veteran, and keep the veteran from ditching him? And will the team manage to discover who was responsible for the murder of the Marine? Find out what happens when you watch NCIS Season 14 Episode 19 online!