Here's what's trending for August 13.

Allentown will need another police chief. Interim Police Chief Tony Alsleben has submitted his resignation, effective September 6th. In a statement, Alsleben said he is proud of what the department accomplished under his leadership and that he is grateful for the opportunity to serve as chief. The 45-year-old Alsleben had been given the job by Mayor Ray O'Connell last April and was the nominee to become the permanent chief but he says his nomination has become an unnecessary distraction for the city. A summer of violence in the city prompted several elected officials and some in the community to point fingers in Alsleben's direction and to question his leadership.

A helicopter crash at an industrial park near Lehigh Valley International Airport has left the pilot, Matthew McMillian, in critical condition at the hospital after Sunday afternoon's crash. The helicopter involved in the crash took off from the Ace Pilot Training School at LVIA, where McMillian is an instructor. Around 2:45 p.m., the chopper swiped the roof and side of a building at the Lehigh Valley Industrial Park off Postal Road in Hanover Township and landed on the grass. The chopper was destroyed. McMillian's father tells WFMZ his son is in the ICU and was in critical condition. Authorities have not released the passenger's name or extent of that person's injuries. The FAA and state police are investigating the crash.

The two North Carolina men suspected in a Northampton County home invasion are both under arrest. Slate Belt Regional police say defendants Kevin Campbell and Hezekiah Moore are in custody after Campbell, who was arrested first, apparently ratted Moore out. Police say they arrested Campbell in North Carolina last Friday and then he identified Moore as his accomplice. The men allegedly shot a Plainfield Township homeowner in the legs before stealing a safe that contained about $1600.

Pennsylvania Sen. Bob Casey is holding a town hall meeting Wednesday, August 21st at Northampton Community College. Doors at the Lipkin Theatre open that date at 4:30 and the event begins a half hour later.

Musikfest has a new attendance record. The annual festival wrapped up its annual 11-day run Sunday night and after 1.2 million people attended. Organizers say music fans from 46 states and 26 countries visited Bethlehem during the event.

The gates have opened for this year's Kutztown Fair. The week-long event at the fairgrounds is in its 148th year. Organizers say new this year are six brown bears from Florida that swim and perform twice every evening.

Bill Cosby's legal team returned to a Harrisburg courtroom Monday to appeal his sexual assault conviction. Montgomery County First Assistant DA Ed McCann says he's not too concerned about the appeal. "We were confident before we filed our brief, but I'm definitely confident that we presented our case the way we should've presented it today," McCann said. The appellate court is focused on the trial errors that Cosby's legal team claims happened. One includes a promise Cosby had from a former prosecutor that he would never be charged in the case. That promise led Cosby to give a deposition that was later used against him when the documents became unsealed. The 82-year-old Cosby remains in jail serving a three-to-ten-year sentence.

President Trump will make his eagerly-awaited visit to Beaver County today. The President is scheduled to tour the Shell plant there before delivering remarks about energy independence and the U.S. economy. President Trump's Beaver County visit was postponed by a week in response to the mass shootings in Ohio and Texas.

Dozens of New Jersey police departments are about to start a crackdown on drunk and impaired drivers. The Division of Highway Traffic Safety is granting more than $500,000 to more than 300 different law enforcement agencies so they can participate. The "Drive Sober or Get Pulled Over" initiative will launch Friday and then run until September 3rd. Officials say last year's campaign resulted in nearly 1200 impaired driving arrests, as well as more than 4700 speeding summonses and about 3200 citations related to seat belts.