Watchstanding regulate the sailors' duty watches and for other purposes (see main article). Unlike civil clock bells, the strikes of a ship's bell do not accord to the number of the hour. Instead, there are eight bells, one for each half-hour of a four-hour watch. Bells would be struck every half-hour, and in a pattern of pairs for easier counting, with any odd bells at the end of the sequence. Watchstanding Watchstanding, or watchkeeping, in nautical terms concerns the division of qualified personnel to operate a ship continuously. On a typical seafaring vessel, be it naval or merchant, personnel keep watch
End of Watch and Peña so completely reinvent themselves in-character. Instead of wearing the roles like costumes or uniforms, they let the job seep into their skin." The "Los Angeles Times" Betsy Sharkey applauded the chemistry between the two lead actors, as well as their individual performances, writing, "As good as Gyllenhaal is in this, Peña nearly steals the show." In a review for "USA Today", Claudia Puig commended Gyllenhaal for "giv[ing] his best performance since "Brokeback Mountain"" and Peña for "shin[ing] with charisma". Roger Ebert highlighted "End of Watch" as "one of the performances of [Peña's] career" and praised the performances given