Conversation so far:
What was Henry Hill an informant for?
Henry Hill agreed to become an informant and signed an agreement with the Strike Force.
Did Henry Hill testify?
Henry Hill testified against his former associates to avoid a possible execution by his crew or going to prison for his crimes.
Did Henry Hill have to go into witness protection?
Yes, Henry Hill did have to go into witness protection.
Where did Henry Hill move to during his time in the witness protection program?
Henry Hill, his wife Karen, and their two children moved to undisclosed locations in Omaha, Nebraska; Independence, Kentucky; Redmond, Washington; and Seattle, Washington.
Did Henry Hill have to move around a lot?
Henry Hill did move around a lot inside the witness protection program.

Question: Was he safe while in witness protection?
Self-contained rewrite: Was Henry Hill safe while in witness protection?