Thursday Morning Riddle

I’m a forwarded letter; the stores of one brand;
A reaction extended; the line of command;
Hierarchy of food; to securely remand;
And the path of suppliers fulfilling demand.

Who am I?

UPDATE (1/31/15): Nothing yet? Here’s the next riddle in the series:

I’m a strong type of mail; I make bicycles go;
Connect ankle to ball; help your tires in the snow;
I’m a calculus rule; smoking eight in a row;
And I measure first downs so the referees know.

Now, who am I?

UPDATE: Riddle(s) solved by Peter Jenkins. See comments for answer.

2 Responses to “Thursday Morning Riddle”

  1. Peter Jenkins Says:

    Chain

  2. Bill Says:

    CHAIN is correct. Way to go, Peter Jenkins!

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