 When Jean is hearing peoples thoughts in the Science Museum, one of  them is "To the shelter!" This line was said by one of the Secret  Service during Nightcrawlers attack on the Oval Office in the  previous scene, thus adding/alluding to Jeans growing psychic  abilities. Other lines Jean hears are "No!" shouted by Wolverine  when he later is separated from General Stryker by Icemans wall of  ice and "Theyre gonna kill him." which is what Rogue later says to  Iceman and Pyro in the tunnel pleading for them to go back and help  Wolverine.