You know, you come on active duty for a certain period, but you also sign up for a contractual period if you're an enlisted Marine.

NPR: Marine Recall Prompts Questions over Iraq Stress

So you do a certain period on active duty, perhaps two years.

NPR: Marine Recall Prompts Questions over Iraq Stress

We've handed over the duty to them for that period.

BBC: Southampton pays ?1.5m in three years in pothole claims

Located in a period building that once did duty as an engineering school, the Inn at the Market in Pike Place Market is a red-brick, boutique hotel.

BBC: Mini guide to Seattle, Washington

The babies' swaddling blankets were secured with heavy-duty knots for a "lengthy" period of time, and blankets were thrown over their faces while their arms and legs were bound, rendering them virtually incapable of rescuing themselves if they needed air, police said.

NPR: Daycare Owners Arraigned In Calif. Swaddling Case

If you have a vision for your business, then it is your duty to bring it to fruition period.

FORBES: How To Ask For What You Want -- And Get It All

This can be tough for military personnel who may move frequently so an exception applies: you can choose to have the five year period suspended during any period you or your spouse serve on qualified official extended duty while serving in the armed forces (some limits and exceptions apply).

FORBES: Tax Tips for the Military on Memorial Day

He criticised many of the practices at Deepcut during the period covering the four deaths, including that of allowing young recruits to do armed guard duty unsupervised.

BBC: NEWS | UK | The Deepcut investigations