I rather prefer the way Brussels reacted [tempsreel.nouvelobs.com] to how Paris took it — they even got the metro running by the end of the day and seemed to handle it pretty seamlessly — though I suppose, being first, the context in Paris was slightly different.
Intro translated:
"Following the attacks in Brussels, establishments remained open, and the Place de la Bourse did not really fill up with people. The attacks in Paris left people stunned, but those in Brussels did not surprise the Belgians."