  We review recent work on 111 Fe-rich impulsive solar energetic ($\sim$ 3
MeV/nuc) particle (SEP) events observed from 1994 to 2013. Strong elemental
abundance enhancements scale with A/Q, the ion mass-to-charge ratio, as
(A/Q)$^{\alpha}$, where 2 $< \alpha <$ 8 for different events. Most Fe-rich
events are associated with both flares and coronal mass ejections (CMEs), and
those with larger $\alpha$ are associated with smaller flares, slower and
narrower CMEs, and lower SEP event fluences. The narrow equilibrium temperature
range required to fit the observed A/Q enhancements is 2.5--3.2 MK, far below
the characteristic flare temperatures of $>$ 10 MK. Only a small number of SEP
events slightly outside this temperature range were found in an expanded search
of impulsive Fe-rich events. Event characteristics are similar for events
isolated in time and those occurring in clusters. The current challenge is to
determine the solar sources of the Fe-rich events. Ambient coronal regions in
the 2.5--3.2 MK range are broadly distributed both in and outside active
regions. We explore the possibility of acceleration from thermal plasmas at
reconnecting current sheets in the context of observed standard and blowout
jets. Recent current sheet reconnection modelling provides a basis for the A/Q
enhancements.
