towards the community. >> reporter: the murphys are grateful for the people working to save their home. >> they are incredible. what can you say? they are just so on top of this. they are so coordinated. >> reporter: and they are also exposed and vulnerable. >> it is dangerous for them right now. everything is a calculated risk when it comes to firefighting, but any time you're establishing a line on top of a ridge and the fire is below you, that's one of the recipes we have for disaster. >> amazing. gary joins me live from groveland, california. what is the latest for the fire damage in yosemite park? >> reporter: 6% of the park, anderson, has been consumed by flames, 41,000 acres, but it's not the part of the park where tourists go. we mentioned before the yosemite valley and the southern part hasn't been touched yet. also not touched yet are groves of sequoia trees. these are some of the tallest and oldest living things in the