Executive Summary

1. Precursor HST Observations

2. A Ground-Based, Near-IR, Microlensing Survey

3. Development of Expertise

1 Introduction

2 Optical HST Imaging of the WFIRST Fields

3 Ground-Based, Near-IR, Microlensing Survey

4 Satellite Parallaxes

5 Lens Flux Measurements of Current Microlensing Events

6 Astrometric Microlensing Due to Black Holes

7 Multi-Epoch, Near-IR, HST Observations

8 Microlensing Analysis Challenge

9 Conclusions