As international travel, cruises, and airline restrictions loosen people will start taking those vacation options.

It's not likely dangerous - while Great stuff is flammable - the hot air in your duct line will not ignite it.What may happen is the foam will eventually loosen over time with the repeated expansion and contraction of the vent pipe and the seal will fail.  

Rising housing prices coupled with modestly higher interest rates will incentivize lenders to further loosen lending standards to historical norms which will open up the buyers pool and effectively negate the loss of buying power from modestly higher rates.

Perhaps loosen the bolts on your headboard so it bangs against the wall as the bed rocks.

Bank were told if they did not loosen the guidelines for underwriting then they would be labeled as not good institutions.

Loosen clean-out slightly but do not pull it out completely until you get the bucket under the opening to catch all of the debris that will fall out.

It will "loosen" you up.

Many times if you just loosen up on one or two things then the world changes and what wasn't possible is now doable.Also you don't really need a place "well updated" in order to have roommates.

Renters can become homeowners with improving credit scores and loosening financing requirements

The next day I was talking to a friend about the task and he recommended using a heat gun to loosen the glue.