SAN JUAN, Puerto Rico (AP) — Some current and former American Airlines employees are sought in an international drug smuggling investigation.U.S. agents on Wednesday raided Puerto Rico's main airport in San Juan and arrested more than 30 people.Two workers at Miami International Airport and another at Dallas-Fort Worth International Airport were also arrested.The Drug Enforcement Administration says at least 45 arrest warrants were issued, including for 12 current or former employees of Fort Worth-based American. Other warrants name workers at Ground Motive Dependable, which handles baggage.An American spokesman says the airline is cooperating with law enforcement.The arrests are a continuation of a 2009 operation that targeted nine American Airlines workers.