The exception to the warrant requirement allows police to conduct a search without a warrant in situations where, without immediate police action, the suspect may destroy evidence or may pose a threat of danger to himself, the police, or the public, or someone else may be in further danger of harm.

In financial aspects, a depression is a sustained, long haul downturn in monetary movement in one or more economies. it is a more extreme monetary downturn than a recession, which is a slowdown in financial action through the span of a typical business cycle. a depression is an irregular and extreme type of recession. so depression is always followed by recession but it is not correct to state that a depression always follow a recession.