It's been 10 years since Superstorm Sandy slammed Long Island, devastating communities and leaving thousands in the dark.

Many Long Islanders were left without power for several days or even weeks.

Frustrations boiled over in Oceanside where residents protested as they had no electricity or heat while temperatures dropped.

“People just wanted answers, answers of when we would get our power back,” says Cynthia Rosen, who was at the rally. "We couldn't shower, we didn't even know when the power was coming back on. It was very scary because I had a 3-year-old at the time, and I had a 13-year-old.”

LIPA was replaced by PSEG Long Island in the years that followed. Equipment that had flooded was elevated.

Richard Henderson, of PSEG, says a substation in Long Beach was designed to to withstand a 12-foot storm surge. Similar work has been done at eight other stations along the South Shore. 

Through a FEMA-funded project and a separate program called Power On, more than 1,200 miles of power lines have been upgraded. The lines have been built a foot deeper into the ground and made to withstand winds up to 135 mph.

Henderson says when the next big storm hits, "We'll be ready. Hopefully by that time a lot more has been done to harden the system and be ready for it so that we limit the outages.”