Of the more than 61,000 callers so far this year, about 59% had medical questions resolved without having to travel to an urgent care clinic or hospital.
According to the Torchlight Initiative, 217 troops who served at nuclear missile sites, or their surviving family members, have reported cases of cancer.
The review now includes personnel who worked on, guarded, supported or operated ground-based warheads at Malmstrom, F.E. Warren and Minot Air Force bases.