  We describe the GW follow-up strategy and subsequent results of the DLT40
during the second science run (O2) of the LVC. Depending on the information
provided in the GW alert together with the localization map sent by the LVC,
DLT40 would respond promptly to image the corresponding galaxies selected by
our ranking algorithm in order to search for possible EM counterparts in real
time. During the LVC O2 run, DLT40 followed ten GW triggers, observing between
$\sim$20-100 galaxies within the GW localization area of each event. From this
campaign, we identified two real transient sources within the GW localizations
with an appropriate on-source time -- one was an unrelated type Ia supernova
(SN~2017cbv), and the other was the optical kilonova, AT
2017fgo/SSS17a/DLT17ck, associated with the binary neutron star coalescence
GW170817 (a.k.a gamma-ray burst GRB170817A). We conclude with a discussion of
the DLT40 survey's plans for the upcoming LVC O3 run, which include expanding
our galaxy search fields out to $D\approx$65 Mpc to match the LVC's planned
three-detector sensitivity for binary neutron star mergers.
