ORIGINAL AIRDATE: November 18th, 2016 --- The team are pinned down at the Latvian embassy, bringing a terrorist to justice. MISSION: After catching a Latvian terrorist, Mac, Jack, and Riley are trapped in an embassy under siege waiting for reinforcements to relieve them. This week's highlights include: Richard was right. This footage is crazy. Andrea Seitz caught this screenshot mentioned in a tweet from @AVRicher.Mannitol hexanitrate (Chemistry) Mannitol hexanitrate is a powerful explosive. Physically, it is a powdery solid at normal temperature ranges, with density of 1.73 g/cm3. The chemical name is hexanitromannitol and it is also known as nitromannite, MHN, and nitromannitol, and by the trademarks Nitranitol and Mannitrin. It is more stable than nitroglycerin, and it is used in detonators. Check out the article on wikipedia: https://en.wikipedia.org/wiki/Mannitol_hexanitrate.