Helen Johnson was standing on a platform waiting for a passenger train.Amtrak owned and operated the trains and employed the station guards.A man carrying a package wrapped in newspaper tried to board a moving train.Railroad guards attempted to help him.In doing so, the package was dislodged from the man's arms, fell to the tracks and exploded.It contained fireworks.The explosion shook the railroad platform, causing a scale to fall on Helen standing a considerable distance away, injuring her.She sued the railroad for negligence.

Were the railroad's employees negligent at any time during the event?Why or why not?