Improve a Javascript created

I have created a javascript which works using google maps and gps data but I would like some improvements to be done to make it more automative. I would like the for the flight path to read a txt file which is online in an S3 bucket and add each line of the text into the array instead of manually adding in each line I would like another txt file read from an S3 bucket and for each line it creates a new google a google marker for each line in the txt file. Update the [login to view URL] and [login to view URL] where it reads the first line of the [login to view URL] file and changes this data based off the info in that line. Data is here and attached for the flight path array: [login to view URL]