In 2009, there were about 643,000 sheltered and unsheltered homeless persons nationwide. Separate counts of sheltered people and unsheltered people are critical in understanding the homeless population. Unsheltered nests are more prone to destruction than sheltered one. Of those, 1,169 were sheltered and 1,086 were unsheltered. These facility are usually sheltered or indoor, but unsheltered outdoor facilities also exist. Recent homeless enumeration survey documentation utilizes the term "unsheltered homeless". In 2016 Lennox had an unsheltered homeless population of 139. In 2017 there was an unsheltered homeless population of 143. The report cites 4 types&colon; unsheltered, emergency-sheltered, provisionally-accommodated, and at risk of homelessness. Beck is an advocate for the unsheltered homeless of Los Angeles. Additionally, San Francisco was revealed to have the most unsheltered homeless people in the country. These isolated trees grew, unsheltered and are often gnarled by wind and weather. Some single-family houses have built-in garages; others have carports or unsheltered spaces on the grounds. The unsheltered Cape Evans anchorage exposed "Aurora" to the full harshness of the winter weather. It was also reported that there was an increase of 24% for the unsheltered population.