Marine aviation squadrons are suffering more than ground units after 15 years of war and deep budget cuts, Commandant Gen. Robert Neller told lawmakers on Tuesday.

“We would — as a goal — like to have 80 percent of our units ready to go,” Neller said at House Appropriations Defense Subcommittee hearing. “We’re not quite there, particularly on the aviation side.”

Readiness levels for ground units are “trending up,” Neller said.

“The Congress has given us $5 billion to reset our ground equipment,” he said. “We’ve got about 79 percent of that complete — and about 50 percent of that equipment is back to the force.”