When Torres is chasing the suspect you can clearly see it is a body double doing the running as baseball cap is covering face and person is much taller and well built compared to actor Wilmer Valderrama.
When Jack talks to Gibbs in the elevator as he is leaving HQ to go help Fornell, her hair is shoulder length. Two days later when Gibbs sits with her at the military concert, her hair is much longer.
A seed of Quercus virginiana (Southern Live Oak) would be an acorn, which wouldn't fit under a fingernail.
M.E. Jimmy uses dead murder suspect's hand to open safe, now in morgue. This is at least second time it's been opened this way, as Jimmy tells agents and Kasie the amount of money in safe. Then he closes safe and the word "locked" appears on safe door. Is he going to keep the corpse's hand on hand for future openings? No cataloging of contents and locking in evidence locker, just re-locking in safe that needs dead man's hand to open. It was revealed earlier in the story how much money was involved. The safe would have been temporarily locked until the money is taken and logged. More than likely, the safe has an option to change the lock to a number combination.