aerial war weapons

I do not understand what the first photo on this page shows:
AP monthly photo contest (September 2024); the photo with description "Israeli shelling hit an area in southern Lebanon as seen from northern Israel, Monday, Sept. 30, 2024. (AP Photo/Leo Correa)".

What are all the parallel glowing vertical streaks in the sky? Is it a single bomb that explodes in the sky, dropping burning pieces of something (what?) over such a large area? Or what?
Can someone point me to an explanation of this weapon?

I am reminded of horrific photos from the Ukraine war, of burning... I don't remember what it is called. Which causes fires everywhere it lands. But this seems to be something different.

Update, 4:04am:
It occurs to me now that perhaps the vertical trails of light aren't things falling from the sky, but rather flares being released from many places on the ground around the same time, as a countermeasure against the aircraft doing the shelling? Or to confuse guided missiles (but would guided missiles be considered "shelling" as mentioned in the description?)
When I search on "flares against aerial bombardment", all the articles are about flares being released from aircraft, not shot up in the air from the ground.

Update, 2025/01/08:
I am still not sure what the photo depicts.

I found another photo of the same scene on a Croatian website (the photo seems to be by photographer "Atef Safadi"):
https://www.tportal.hr/vijesti/clanak/izrael-obecao-odgovor-na-iranski-napad-imamo-plan-bit-ce-posljedica-foto-20241001

This is a photo of a different daytime scene from that photographer, which based on two of the streaks seems to show they are going from the ground upwards, if I am interpreting it correctly:
https://www.instagram.com/atefsafadi/p/C30bq6ytg7L/

sample Copilot coding chat

I saved some screenshots to show how easy it can be (in some cases) to get Copilot to help you with simple coding tasks.

These were my prompts:
1. Hello, please suggest how to code a powershell script to convert values like "1724143246792" to a timestamp format of YYYYMMDD-hhmmss

2. The script should take the input value as a parameter

3. Thank you but it isn't giving the right date. 1724143246792 should convert to approximately 20240819-132248, but the above script gives 16010102-235334

4. Thank you, that works better. But the output time is in UTC and I would like it in Eastern US time

5. Thank you, that is good. If the input value is from the summer, will the output be in EDT, or will it always be in EST?

( Screenshots of Copilot's answers behind the cut )