search on the Solar Object Locator keyword . Similarly, the first X-class flare of Solar Cycle 24 () was simultaneously observed by multiple instruments at high cadence, resulting in 42 refereed publications to date. The exceptional data coverage of each of these events allowed [@klei16] and [@mill14], respectively, to investigate the redistribution of nonthermal electron energy. They were both able to compare radiative losses in the chromosphere across a range of wavelengths with the energy injected by nonthermal particles from hard X-ray observations. In both cases only 15–20% of the nonthermal energy could be accounted for from longer-wavelength measurements. Understanding where this “missing energy’ went to can only be answered by even better data coverage. Clearly there is great scientific merit in multi-instrument observations of the same event.

Likewise for other astronomical research areas where coordinated observations of transient objects (“Targets Of Opportunity”) at different wavelengths are highly desirable. The study of supernovae, for example, is facilitated by the availability of both lightcurves (to understand the evolution) and spectra (to understand the composition and dynamics). The *Open Supernova Catalog* [@guil17] acts as a central repository providing access to data for over 42,000 known supernova events. According to the statistics page 