The bomb is exactly the same as those that can be found in storage at Fort Constantine. As the PC approaches Megaton, he/she could see scavenging or hunting birds circling above the city. Note: Some NPC's in Megaton tend to die by falling from one of the upper levels, if you suddenly can't find a NPC, keep in mind that they might be lying dead somewhere around the lower parts of town.
The bomb is exactly the same as those that can be found in storage at Fort Constantine. As the PC approaches Megaton, he/she could see scavenging or hunting birds circling above the city. Note: Some NPC's in Megaton tend to die by falling from one of the upper levels, if you suddenly can't find a NPC, keep in mind that they might be lying dead somewhere around the lower parts of town.