department of homeland security

/dɪpˈɑːtmənt ɒv hˈəʊmlənd sɪkjˈʊəɹɪti/

/dɪpˈɑːɹtmənt ʌv hˈoʊmlənd sɪkjˈʊɹɪɾi/

a governmental organization responsible for ensuring the security and safety of a nation's citizens, infrastructure, and borders