11.   In this sense, the guns have a virtually religious import, and gun restrictions pose a serious psychological threat.

12.   Make no mistake, this is the most serious threat our industry has ever seen.

13.   No one sees them as a serious threat.

14.   Perhaps the argument that constituted the most serious threat to Copernicus was the so-called tower argument.

15.   Supplies of food ran sufficiently low to pose a threat as serious as invasion.

16.   Supplies of food were so low that this posed a threat as serious as invasion.

17.   Surely they realized that I posed no serious threat.