The Drug Enforcement Administration has apologized to a San Diego college student who said he drank his own urine to survive after being left in a holding cell for five days without food, water or access to a toilet. The man, identified by news outlets as 23-year-old UC San Diego engineering student Daniel Chong, was “accidentally” left in the holding cell after he and eight other people were detained for questioning following an April 21 raid in which agents found guns, ammunition and an array of drugs, including 18,000 ecstasy pills, the DEA said. “I am deeply troubled by the...