Bailey was on duty during a star mapping mission in 2266, when, on the third day, the Enterprise encountered a warning buoy, and later the First Federation flagship Fesarius. The tension of the encounter detracted from the gung-ho lieutenant's performance and might have ruined his career.
Initially relieved of duty for a near breakdown, he requested permission to return to duty even though the ship was apparently seconds from being destroyed, confirming Kirk's positive assessment of his character and fitness for bridge duty.
At the conclusion of the encounter, when Kirk put together an away mission to visit Balok's pilot vessel, he offered to take Bailey, to give him "a look at the unknown". When Balok commented how lonely he was, and suggested that even an alien would be welcome company, Kirk looked to Bailey, who eagerly volunteered. (TOS: "The Corbomite Maneuver")
|Navigators of the starships Enterprise|
|USS Enterprise:||Arex • Bailey • Brent • Chekov • DePaul • DeSalle • DiFalco • Farrell • Hadley • Haines • Ilia • Kelso • Latimer • Leslie • Osborne • Painter • Riley • Stiles • Saavik • Tyler • Uhura|
|USS Enterprise (alternate reality):||Chekov • Darwin|