Countdown to launch

// Countdown to launch program

using System;
using System.Threading;

class Submission
{
    // -------------------------
    // Subprograms
    // -------------------------
    static void countdown()
    {
        Console.WriteLine("T minus...");
        for (int counter = 10; counter > 0; counter--)
        {
            Console.WriteLine($"{counter} ...");
            Thread.Sleep(1000);
        }
        Console.WriteLine("0 ...");
        Console.WriteLine("All engines running.");
        Console.WriteLine("Lift off, we have a lift off on Artemis 1.");
        Thread.Sleep(1000);
        Console.WriteLine("Tower clear.");
        Console.ReadLine();
    }


    // -------------------------
    // Main program
    // -------------------------
    public static void Main(string[] args)
    {
        countdown();
    }

}