All the radio transmissions between marine squads, and Emergency Alert System broadcasts throughout Black Mesa, a fan-made recreation of the original Half Life.
Please go check out the game, and play it, whether you've played Half Life or not. This took 15 years to fully complete, the team going above and beyond with every little detail and re-imagining of the original in this game. Especially the Xen chapters.
store.steampowered.com/app/36...
EAS Broadcast 1 (LOCAL) - 0:00
EAS Broadcast 2 (STATEWIDE) - 1:42
Radio Transmissions in Surface Tension - 3:11
EAS Broadcast 3 (NATIONAL) - 4:51
Radio Transmissions of HECU evacuating - 6:26