THIS PROPOSAL REQUESTS SUPPORT FOR MY DUTIES AS THE CHAIR OF THE NASA-APPOINTED L3 STUDY TEAM AND SHOULD I BE SELECTED A FOLLOW-ON SCIENCE TEAM. THIS STUDY TEAM HAS BEEN CHARGED WITH THE RESPONSIBILITY OF SUPPORTING NASA'S PLANNING FOR PARTICIPATION IN THE ESA GRAVITATIONAL WAVE MISSION AND TO PULL TOGETHER THE COMMUNITY RESPONSE TO THE INVITATION TO ADDRESS THE 2020 DECADAL REVIEW.