David McDonald

Dave was the Chief environmental officer at Starbase 134 in the late 23rd century. 

Early life before Starfleet
Dave was born on July 28, 2228 human calendar time on the planet Earth in Glasgow, Scotland.

Chronology

 * 2228: Dave is born on Earth in Glasgow, Scotland.
 * 2246: Dave enters Starfleet Academy
 * 2250: Dave graduates Starfleet Academy and is promoted to Ensign, the first assignment is the USS Xerxes as an environmental officer.
 * 2255: Dave is promoted to Lieutenant junior grade and assigned to the USS Hood as an environmental officer.
 * 2260: Dave is promoted to full Lieutenant and is made the Assistant Chief Environmental Officer on the USS Merrimac.
 * 2265: Dave is promoted to Lieutenant Commander and is assigned to the USS Aldebaran as the Chief Environmental Officer.
 * 2270: Dave is promoted to Commander and becomes the Chief Environmental Officer at Starbase 134.