According to James Casbolt:

One of my CIA contacts claims that in the underground facility under Nellis air force base there are at least 180,000 grey Zetan bio-robots that are being bred for an army as we speak. There is much information to suggest that the lowest levels of some bases are just for Zetan grey, Nordic Annunaki and Draconian reptilian collaboration forces and humans are not permitted to enter. According to a NSA contact, the Nordic anunnaki from the Sirius star system are at the top of the chain of command at the Dulce base and have a loose strategic alliance with the Draconian reptilans. The Dracos provide the Annunaki with Zetan bio-robots for abductions and to collect embryos from human females.