COLUMBIA, South Carolina, Sept. 29 -- The U.S. Attorney for the District of South Carolina, Adair F. Boroughs, issued the following news release: Three men were sentenced to federal prison after an attempted drug robbery led to a gunfight in a parking garage at the Greenville-Spartanburg International Airport. Dequadry Kendrick Razor, 21, of Columbia, was sentenced to twenty years in prison after pleading guilty to armed robbery, conspiracy to distribute marijuana, and possessing and dischargi  more