42 Civil engineering for the design of airports, and metal and non-metal landing and take-off platforms for electric vertical landing and take-off aircraft, and for helicopters; Civil engineering relating to airports, and metal and non-metal landing and take-off platforms for electric vertical landing and take-off aircraft, and for helicopters, including use of high-rise rooftops and underused residential, industrial, and other spaces as landing and take-off platforms for helicopters and electric vertical landing and take-off aircraft, and further including customized design, feasibility analysis and engineering services related to installation of said platforms in various locations, and adapting and installing said platforms in specific environments, including high-rise rooftops and residential, industrial, and other underused spaces; Providing weather information; Providing weather information via a website; Providing real-time weather information; Weather information services