  We demonstrate site-resolved imaging of individual fermionic lithium-6 atoms
in a 2D optical lattice. To preserve the density distribution during
fluorescence imaging, we simultaneously cool the atoms with 3D Raman sideband
cooling. This laser cooling technique, demonstrated here for the first time for
lithium-6 atoms, also provides a pathway to rapid low-entropy filling of an
optical lattice. We are able to determine the occupation of individual lattice
sites with a fidelity >95%, enabling direct, local measurement of particle
correlations in Fermi lattice systems. This ability will be instrumental for
creating and investigating low-temperature phases of the Fermi-Hubbard model,
including antiferromagnets and d-wave superfluidity.
