These handy tips about airport security checks will save you a lot of time on your way to Baltimore: Security personnel will ask to see your boarding pass and passport as part of their checks. Store them in an accessible place, ready for inspection. It's useful to know that belts with metal buckles can set off the body scanner's alarms. If you're wearing one, you may be instructed to step back and remove it before moving on. Laptops must be taken out of their protective cases and placed in a tray before X-raying. Toothpaste, deodorant and other toiletry items in liquid, gel or cream form need to be stored in containers no larger than 3.4 ounces (100 milliliters). They must also fit in a 1-quart (1-liter) clear zip-lock plastic bag. Loosen your shoelaces as you approach the body scanner. Depending on the style of shoes you've got on, security may tell you to take them off. Pocketknives and corkscrews are not allowed on board the plane. Put them in your checked luggage to avoid losing them at the security checkpoint.