"Blow Out Bag" video by Joe Fox

[TWP]

This is something you do need...  'Nuf Said...

There are lots of variables in the composition of a Blow Out Bag, but this video shows and describes the content of one which is available as a kit.

The source is given in the video and I'm NOT advising that you buy it, but it is a good example of what you need.

https://www.youtube.com/watch?v=dflgFGZJ_O8

The other thing you MUST HAVE is TRAINING in how to use your Blow Out Bag.

Did I mention TRAINING?  TRAINING, TRAINING...

That means you need to find a place to obtain said TRAINING.

I would start be contacting a local hospital, emergency treatment center or talk to an EMT (Emergency Medical Technician) who can direct you to a TRAINING SCHOOL.

Finally, the kit being described in the video is not cheap and I think you could find almost all of the items in a good, local medical supply store.  Some items CANNOT be purchased without a prescription... So watch the video for some advice on this point.

And last but not least:  TRAINING, TRAINING, TRAINING.

[WolfBrother]

Yes - Training x 10
The kit noted is good.

Current TCCC (Tactical Combat Casualty Care) protocols stress stopping/control of LIFE THREATENING BLEEDING and maintaining airway/respiration.

To do that I carry
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2 ea. - Hyfin Vent Chest Seal - https://www.narescue.com/military-products/respirations/hyfin-vent-chest-seal
2 ea. - Hyfin non-Vent Chest Seal -  https://www.narescue.com/military-products/respirations/hyfin-chest-seal
2 ea. - NPA (Nasopharyngeal airway) with Lube - https://www.narescue.com/military-products/airway/nasopharyngeal-airway-with-lubricant
4 ea. - 3.25" 14 ga. Gauge Catheter -  https://www.narescue.com/military-products/respirations/ars-for-needle-decompression-3-25-in
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1 ea. - Combat Application Tourniquet (C-A-T) - https://www.narescue.com/combat-application-tourniquet-c-a-t
2 ea. - Israeli battle dressing (IBD) - size 6 inch wide and 70 inch long - https://www.amazon.com/Ever-Ready-First-Aid-Compression/dp/B003DPVERM
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3 ea. - Black Talon Glove Kit - XLarge - https://www.narescue.com/black-talon-glove-kit
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I have a goodly amount of experience in this area.  IF you have questions, ask me, I will tell you what I would do/buy.  I will not tell you what to do nor what to buy.  If asked about specific equipment/supplies I will give you my opinion. 
NOTE how weaselly worded this is.  I write it this way to make sure that you understand that I am not practicing medicine and that I am sharing with you my experience and knowledge.