Our first meeting is scheduled for December 5-9 2016. This meeting will focus on our Objective 1 (Understanding the measurements) and Objective 2 (Understanding the modeling approaches). Discussions will focus on: (1) comet studies: major empirical findings and the challenge to disentangle cosmogonic vs. evolutionary effects, (2) brief overview of disk observations, and (3) model capabilities and predictions for ice abundances. These topics will be placed in context of comparisons between relative abundances for several cometary parent volatiles and those predicted for the midplane of the protoplanetary disk where comets formed.