Eerie silence in Westminster after attack

The House of Commons resumed business as planned in a show of defiance -- even allowing in members of the public to watch, as usual.The only sounds were the helicopters circling above and the fountain in New Palace Yard, still gushing water just short distance from where police officer Keith Palmer was stabbed to death and his suspected assailant was shot.Parliament was locked down during the attack, in which the suspect first mowed down scores of people on nearby Westminster Bridge, leaving two