  The Beam Energy Scan (BES) program at the Relativistic Heavy Ion Collider
(RHIC) was extended to energies below $\sqrt{\textit{s}_{NN}}$ = 7.7 GeV in
2015 by successful implementation of the fixed-target mode of operation in the
STAR (Solenoidal Track At RHIC) experiment. In the fixed-target mode, ions
circulate in one ring of the collider and interact with a stationary target at
the entrance of the STAR Time Projection Chamber. The first results for Au+Au
collisions at $\sqrt{\textit{s}_{NN}}$ = 4.5 GeV are presented, including
directed and elliptic flow of identified hadrons, and radii from pion
femtoscopy. The proton flow and pion femtoscopy results agree quantitatively
with earlier measurements by Alternating Gradient Synchrotron experiments at
similar energies. This validates running the STAR experiment in the
fixed-target configuration. Pion directed and elliptic flow are presented for
the first time at this beam energy. Pion and proton elliptic flow show behavior
which hints at constituent quark scaling, but large error bars preclude
reliable conclusions. The ongoing second phase of BES (BES-II) will provide
fixed-target data sets with 100 times more events at each of several energies
down to $\sqrt{\textit{s}_{NN}}$ = 3.0 GeV.
