Continuity mistake: When Admiral Chegwidden hands Petty Officer Coates a dress of hers he found in the galley, Coates' grip on the hanger changes between shots. (00:09:35)
Factual error: In the opening scene the caption states "Antwerp, Belgium Diamond District", however, the street show is actually located in Amsterdam, The Netherlands. The building at the end of the street is the "Rijksmuseum" (famous for Rembrandt's "Nachtwacht"). Furthermore, the 2 diamond experts speak German. If it was in Antwerp, they should have been speaking Dutch or Flemish.
Continuity mistake: When Mac talks to Webb at the end of the episode, she remains still on the couch, but then her hands suddenly appear up in front of her face. (00:41:35)
Visible crew/equipment: When Mac and Lt. Vukovic question Anwar about why he killed the crew of the Pulau, a red "T" of actor's tape is visible beneath Vukovic's feet. (00:16:15)
Fair Winds and Following Seas - S10-E22
Continuity mistake: The opening scene, which is a replay of the ending scene from the previous episode, is slightly different. When Gen. Cresswell tells Mac she'll be stationed in San Diego, Harm comments "It's only a five hour plane ride" instead of "it's only five hours away", and when Rabb is promoted to Captain, Cresswell briefly pauses at "it's" when he says "By the way, it's a captain's billet", while there was previously no pause.
Fair Winds and Following Seas - S10-E22
Character mistake: Characters occasionally refer to Rabb as "Commander", even though they know he was promoted to Captain.
Answer: Officially, the individual has been ordered to attend, failing to could be interpreted as either, Failure to follow orders, dereliction of duty, going AWOL, or even desertion. It would depend on the underlying reason as to why the person doesn't appear.