Columbia, Eschede train, Grenfell Tower
S1, E1: Feb 1, 2003 Columbia space shuttle breakup; June 14, 2017 Grenfell Tower fire; June 3, 1998 Eschede high speed train derailment

S1, E1: Feb 1, 2003 Columbia space shuttle breakup; June 14, 2017 Grenfell Tower fire; June 3, 1998 Eschede high speed train derailment