The crowds and shelves are returning to normal at the Schmick's Market grocery stores in Lincoln. "The last two weeks we've been up over 100% every day," said co-owner Cody Schmick.He has been in the business for 20 years, his father, four decades. He said they have never seen anything like it-- customers loading up on food and supplies for days."I don't blame them. It's been a little scary. It was kind of uncharted territory for everybody," Schmick said.He said they are still short on certain items, such as toilet paper and hand sanitizers, but he's not worried."Everything that we've seen is everything we've heard, there's no shortage of anything. People just bought big and it was all of sudden," Schmick said.That's the same message coming from agriculture groups and food processors."We are prepared to work through this. We are prepared to continue to put food on your table," said Jessica Kolterman, a spokesperson from Lincoln Premium Poultry.She made the remarks in a news conference with Nebraska Gov. Pete Ricketts on Wednesday.Jennifer Ryan, a professor of supply chain management and analytics in the College of Business at the University of Nebraska Lincoln said the sudden surge in demand caught retailers off guard."Those shortages are temporary and people shouldn't panic," Ryan said.She said retailers work on low margins, so it takes time to restock when there is such a spike in demand. "There is plenty of capacity in the US supply chain for food. I'm not worried at all about that. I think it's the medical equipment and medical supplies that's more of a concern," Ryan said.She said some of those products are made in China. Those manufacturers shut down. They are beginning start back up, but are now facing other issues, such as border closings."So they are encountering issues relating to getting their products, that they are now able to get back to producing, getting them into the U.S.," Ryan said.She said what makes this different than other supply chain disruptions is that it's global.She said policy makers may want to rethink how much is kept in the federal stockpiles."We used to keep a lot more inventory in our supply chains, just in case. We got out of that because it was expensive. It wasn't efficient. But I think we might have to rethink that," Ryan said. Schmick said being a smaller, family-owned store actually has had some advantages."We could turn around those shelves a little more quicker and get more stuff in here. Normally we had only two or three trucks and we were getting up to 10 trucks," Schmick said.He also said he could save some items back for some customers, especially elderly who needed the hard to find products."We can help them get through this time," Schmick said.His said his best advice, "Don't panic, but it's okay to be prepared too," Schmick said.