  A new measurement of the anomalous magnetic moment of the muon, $a_{\mu}
\equiv (g-2)/2$, will be performed at the Fermi National Accelerator Laboratory
with data taking beginning in 2017. The most recent measurement, performed at
Brookhaven National Laboratory (BNL) and completed in 2001, shows a 3.5
standard deviation discrepancy with the standard model value of $a_\mu$. The
new measurement will accumulate 21 times the BNL statistics using upgraded
magnet, detector, and storage ring systems, enabling a measurement of $a_\mu$
to 140 ppb, a factor of 4 improvement in the uncertainty the previous
measurement. This improvement in precision, combined with recent improvements
in our understanding of the QCD contributions to the muon $g$-$2$, could
provide a discrepancy from the standard model greater than 7$\sigma$ if the
central value is the same as that measured by the BNL experiment, which would
be a clear indication of new physics.
