1. Such requests are common from defense lawyers, but almost unheard of from prosecutors.

2. Although fireworks accidents at professional shows are rare, they are not unheard of.

3. The storms brought an array of chaos that a National Weather Service meteorologist called rare but not unheard of.

4. Sending bogus information to the media to advance law enforcement goals is rare but not unheard of.

5. Five years ago, it was unheard of seeing this younger group spend more than a few thousand dollars on acquiring a work.

6. Although the number of immigrant children who have died crossing into Texas was not immediately available, such discoveries are not unheard of.

7. Bringing your own device to work was unheard of.