What are the rules for keeping a flag at half staff?

Why Texas and U.S. flags were at half-staff this week

Half Staff Flags Explained | Flag Facts

Why are flags flown at half-staff or half-mast? Here's the difference. #Shorts

Why Do We Fly Flags Half Mast or at Half-Staff?

Why is the flag at half mast?

Why Do We Fly Flag At Half Mast?

Why Do We Fly Flags At Half-Staff? | Answers With Joe

Why do we lower the flag to half-staff?

When Do You Fly the Flag at Half Mast?

Here's why flags are flying at half-staff in Washington Thursday

Why are flags at half-staff in Ohio?

UN flags at half staff for Iran's President

When should you fly the flag at half staff?

Half-masting explained

Verify: What is the rule for flying the flag at half-staff?

Flags still fly half mast for residential school victims

Why are flags lowered to half-staff?

Why are flags flying at half-staff in South Carolina on Wednesday?

Flags to fly at half staff