Boston Marathon bomber Dzhokhar Tsarnaev was sentenced to death by a federal grand jury Friday. He is likely to appeal. Most convicts who are sentenced to death in the U.S. spend years on death row while a lengthy appeals process plays out, which means it could be decades until Tsarnaev, now 21, faces execution.
Out of the 80 federal defendants sentenced to death in the last 27 years, only three have been executed. Many are still going through appeals; others have been cleared or have died in the interim, the New York Times said.