-
Now Playing: Mourners pay their respects to Barbara Bush
-
Now Playing: N. Korea says it will suspend all nuclear and ICBM tests
-
Now Playing: New York Yankees step up to the plate for 4th-grader in need
-
Now Playing: Democratic Party launches legal attack against Trump's inner circle
-
Now Playing: Woman wanted by authorities in double slaying arrested at restaurant
-
Now Playing: Investigators searching for motive after 2 officers fatally shot in restaurant
-
Now Playing: Hotel housekeepers are using a new tool for protection
-
Now Playing: Comey memos: 15 pages of meticulous detail, written in real time
-
Now Playing: 19-year-old arrested after entering school and allegedly shooting student
-
Now Playing: FAA issues rare emergency directive after fatal Southwest engine failure
-
Now Playing: 1 worker killed when 2,000-foot TV tower collapses
-
Now Playing: CDC warns: Throw out store-bought chopped romaine lettuce
-
Now Playing: Syracuse suspends fraternity chapter because of disturbing videos
-
Now Playing: FAA says it will order more inspections of heavily used 737s
-
Now Playing: Prince may have unknowingly taken counterfeit medication laced with Fentanyl: Authorities
-
Now Playing: 2 deputies fatally shot while inside a restaurant: Sheriffs
-
Now Playing: Former FBI deputy director facing possible criminal investigation
-
Now Playing: Wintry blast moving across Northeast and New England
-
Now Playing: Trump adds former NY Mayor Rudy Giuliani to his legal team
-
Now Playing: Man being set free after more than 2 decades on death row