Fantastic Four (1998 series) #533

The Hulk is on his way to defuse what he believes is a hydro weapon is located in the Nevada desert. When he arrives he finds something much unsuspected: It wasn't a hydro bomb but a gamma bomb! Leaving every one speechless even the Hulk he then tells everyone to evacuate the area while he tries to defuse it. The bomb detonates. Five hours later in Manhattan, Reed Richards sends the Thing and the Human Torch to investigate what happened in the desert not knowing what awaits.