When Gibbs and Torres stand outside the door Sportelli has locked himself behind, they hear him "rack the slide" of his gun. Considering he had just fired his semi-automatic twice, tacking the slide would not have been necessary, it would only have ejected a live round.
At 00:35- The orange anti-abrasion sleeves on the slings are placed incorrectly. They should protect the webbing from the sharp corners of the casket.
When Agent Nick Torres (Wilmer Valderrama) asks Agent Ellie Bishop (Emily Wickersham) to look up DMSO on her computer, she pronounces it as Diethyl Sulfoxide while the computer screen reads as Dimethyl Sulfoxide.