63K views · 1.4K reactions | From 1860 to now, the Signal Corps has been a critical component to the #USArmy. Signal Soldiers maintain the technical skills necessary to automate, transmit and receive voice and data information; keeping the Army informed and ready to respond at a moment's notice. | U.S. Army | Facebook

1.2M views · 10K reactions | The Vatican says it’s using signal jammers around the Sistine Chapel to prevent electronic surveillance or communication outside the conclave. | NBC News | Facebook

312K views · 2.1K reactions | What is the signal indication? A summer storm moves through northern Ohio as we look west at the signals in Oak Harbor along Norfolk Southern’s Chicago Line. #railroad #railway #train #drone #rail #reels #reelsvideo #signal #indication | Craig Hensley Photography | Facebook

226K views · 1.3K reactions | ⚡ Ever wondered how FieldSense™ works its magic? It detects electrical fields in addition to magnetic fields, chats with the T6 reference signal, and voilà—voltage pops up on the display. Easy, safe, and oh-so-smart! Video by @tetraelectric (on Instagram) #FlukeTools | Fluke Corporation | Facebook