The 1 meter 4-band 2014 California National Agriculture Imaging Program (NAIP) images are ready for you to access via an image service.  Here is the rest endpoint:

http://gis.apfo.usda.gov/arcgis/rest/services/NAIP/California_2014_1m/ImageServer

There are image services for other states too.  Just go up a level:

http://gis.apfo.usda.gov/arcgis/rest/services/NAIP

You can also download image tiles from the National Map application:

http://nationalmap.gov/viewer.html