It's called the Missing Man table, and each item at the table is there for a specific reason. Here's an explanation of what each item symbolizes:
The tablecloth is round, to show our everlasting concern for our missing men.
The plate is white, symbolizing the purity of their motives when answering the call of duty.
The single rose, displayed in a vase, reminds us of the life of each of the missing, and the loved ones and friends of these Americans who keep the faith, awaiting answers.
The vase is tied with a red ribbon, symbol of our continued determination to account for the missing.
A slice of lemon on the bread plate is to remind us of the bitter fate of those captured and missing in a foreign land.
A pinch of salt symbolizes the tears endured by those missing and their families who seek answers.
The glass is inverted, because they aren't here to share today's toast.
The chair is empty... they are missing.
What can I add to that, but my thanks to our veterans, those still missing, those who've paid the ultimate price, and those who were prepared to, who took their turn when it was their turn.