DENVER -- Military reserve units across the country were on standby Wednesday, and some of Colorado's young people were steeling themselves for what lies just ahead.

SELECTIVE SERVICE INFORMATION How To Register Online: www.sss.gov Post Office: Fill out mail-back registration form. By Mail: Return Reminder Mail-back card you received. Check Box: Check box 29 on application form for Federal Student Financial Aid Form. High School: See Selective Service Registrar. Who Must Register Almost all male U.S. citizens and male aliens living in the U.S., 18 - 25. Men with student or visitor visas and those part of diplomatic trade mission are exempt. Dual Nationals: Must register no matter where they live. Hospitalized or Incarcerated Men: Not required to register while they are committed. Must register within 30 days of release. Disabled Men: Must register if they can move about independently. Full-Time Military: Exempt. Members of Reserve and National Guard: Must register if not on full-time duty. Conscientious Objectors: Must register and claim exemption if drafted.

The military does not discuss specific deployment plans, so it is impossible to know exactly who is going where, and when. No Colorado reservists have been called up yet, but it may be only a matter of time, 7NEWS reported.

At Denver International Airport, Brian Kunz prepared to head off to basic training. His decision to join the Army earlier this year had suddenly taken on new significance.

"I think about my friends and family who've been in the service and are veterans, and I want to do my part to contribute," Kunz (pictured, right) said.

Army recruitment offices were experiencing a lot of that type of sentiment, 7NEWS reported. One office received five times as many calls of interest this week as it normally would.

"The unity that people want to participate and want to find ways they can help out and (be) patriotic," Army recruiting station commander Sgt. Troy Boudreaux said.

Sgt. Scott McRae of the Colorado Army National Guard may soon be taking a break from his firefighting job to join his company of military police.

"(I'm) ready to serve the country, and the nervousness will be there. Anybody who's been in that situation will be nervous, but I'm certainly ready to go," McRae said.

There were just a few who may be joining America's quick response team.

"We'll kind of lay low until somebody sticks things in our face and then we'll take care of business," McRae said.

McRae's military police company does perimeter security at military bases and convoy protection, among other things.

It's a good bet that he'll be involved in this mission at some point.

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