We plan to install a seismic network to capture and study a prolific aftershock sequence following Mw 6.4 earthquake in Ridgecrest 2019-07-06 Add more instruments. This update is needed because of a more recent larger event (Mw 7.1 in Ridgecrest) Delay return due to COVID. PI has removed instruments from field but can not access University. 2020-12-31