  A recently discovered group of nearby co-orbital objects is an attractive
location for extraterrestrial intelligence (ETI) to locate a probe to observe
Earth while not being easily seen. These near-Earth objects provide an ideal
way to watch our world from a secure natural object. That provides resources an
ETI might need: materials, a firm anchor, concealment. These have been little
studied by astronomy and not at all by SETI or planetary radar observations. I
describe these objects found thus far and propose both passive and active
observations of them as possible sites for ET probes.
