To help singer Billie escape from a zombie-infested town, we need to create a detailed escape plan that ensures her safety. Here's a step-by-step guide to ensure Billie's safe escape:

Step 1: Initial Assessment and Preparation

• Gather Information: Before Billie arrives, gather as much information as possible about the town's layout, potential safe zones, and the nature of the zombie threat.
• Equip Billie: Ensure Billie has a survival kit including water, food, a first aid kit, a flashlight, a map of the town, and a means of communication like a satellite phone.
• Choose a Safe Route: Plan a route from the concert venue to a safe extraction point, avoiding high-risk areas where zombies are likely to congregate.

Step 2: During the Concert

• Security Detail: Have a dedicated security team with experience in handling emergencies. They should be equipped with non-lethal weapons to manage any immediate threats.
• Early Evacuation Plan: If zombies are spotted, the concert should be stopped immediately, and an evacuation plan should be executed. Billie should be escorted to a pre-determined safe room within the venue.

Step 3: Escape Route Execution

• Vehicle Ready: Have a reliable vehicle ready at the venue's exit, fueled and stocked with additional supplies. The vehicle should be armored if possible.
• Drive to Safe Zone: Billie and her security team should drive to a pre-identified safe zone, such as a fortified building or a location outside the town where a helicopter can land.
• Avoid Main Roads: Use back roads and less-traveled paths to avoid zombie hordes that might be attracted to noise and movement on main roads.

Step 4: Extraction

• Helicopter Evacuation: Arrange for a helicopter to be on standby at the safe zone. Once Billie arrives, she should be quickly transferred to the helicopter.
• Immediate Departure: The helicopter should take off as soon as Billie is aboard, heading to a completely safe location far from the town.

Step 5: Post-Escape Measures

• Debrief and Medical Check: After reaching safety, Billie should undergo a medical check to ensure she hasn't been injured or infected.
• Public Statement: Issue a public statement to reassure fans and the public about Billie's safety and to thank the team that helped in the escape.

Additional Tips

• Stay Calm: Billie should remain calm throughout the escape to follow instructions effectively.
• Communication: Maintain constant communication with the security team and the helicopter pilot to adjust plans if necessary.
• Contingency Plans: Have multiple escape routes and backup plans in case the primary plan fails.

By following these steps, Billie should be able to escape the zombie-infested town safely and return to her fans unharmed.