For this challenge, we are given a jpg file.
Analyzing the file, the symbols tell us that they represent an alphabet/substitution cipher. The hint tells us that these symbols are recognized all around the world.
Doing some research, we discovered a file containing NATO phonetic alphabet, codes, & signals.
Translating from Flaghoist Communication to English, we get riftctfjusta7r1but3t0armedForces.
Flag: riftCTF{Just_A_7r1but3_t0_armedForces}