[Helen hands the kids two masks]
Elastigirl: Put these on. Your identity is your most valuable possession. Protect it. And if anything goes wrong, use your powers.
Violet: But you said never to use...
Elastigirl: [snaps at her] I know what I said!
[sighing]
Elastigirl: Remember the bad guys on the shows you used to watch on Saturday mornings? Well, these guys aren't like those guys. They won't exercise restraint because you are children. They *will* kill you if they get the chance. Do *not* give them that chance.