WASHINGTON — The government is offering carry-on luggage tips for air travelers in a 60-second video. Among the tips to swiftly get through airport checkpoints:

[naviga:font face="ZapfDingbats"]4[/naviga:font] Have boarding pass and identification out when in line.

[naviga:font face="ZapfDingbats"]4[/naviga:font] Take off shoes and outerwear.

[naviga:font face="ZapfDingbats"]4[/naviga:font] Put any loose metal items, like coins, in your carry-on bag.

[naviga:font face="ZapfDingbats"]4[/naviga:font] Pack your carry-on bag as neatly as possible and layer items. For instance, a layer of clothes, then a layer of electronics, then a layer of toiletries.

[naviga:font face="ZapfDingbats"]4[/naviga:font] Put large electronics, like laptops, in a separate bin.

[naviga:font face="ZapfDingbats"]4[/naviga:font] Make sure liquids are in bottles containing no more than three ounces each, and put the bottles in one quart-sized clear baggie. One bag per passenger.

"You know you're not a threat, but our TSOs don't know you, and seemingly innocent items can actually appear to be potential threats in an X-ray image, simply by the way they're packed," according to the Transportation Security Administration's Web site.

The agency asked TSOs — transportation screening officers — for advice on what tips might be helpful to travelers.

The video, called "SimpliFLY," cost $10,000 to write and produce. The people in the video work for TSA.

Domestic carriers were expected to fly roughly 27 million passengers worldwide over the holidays, with planes about 90 percent full, according to the Air Transport Association.