For more than 25 years, Michael Townley’s identity and whereabouts have remained a secret known only to his lawyers and the U.S. Department of Justice.

The government is protecting Townley for his testimony against the men who carried out the 1976 car bombing that killed a Chilean diplomat in Northwest Washington. Townley served five years in prison for his role in the assassination. Ever since, he’s been in hiding. His lawyers at Washington-based Dickstein Shapiro say his life remains in danger.