"I just told them we have to be absolutely quiet, " she said.

CNN: STORY HIGHLIGHTS

"I told them we had to be absolutely quiet, because I was just so afraid if he did come in, then he would hear us and just start shooting the door, " said teacher Kaitlin Roig.

BBC: Connecticut school shooting: Obama calls for action

The train to Glasgow is usually absolutely packed, but was also quiet which actually made it a pleasant journey.

BBC: NEWS | UK | Scotland | Highlands and Islands | Passenger's challenge to get home