Original text:
According to the RATS Architecture, two reference models for Challenge/Response Attestation have been proposed.  This section <del> highlights the information flows bewteen the Attester, Verifier and </del>  Relying Party undergoing Remote Attestation Procedure, using these models. The passport model is so named because of its resemblance to how nations issue passports to their citizens.  In this model, the <del> attestation sequence is a two step procedure.  In the first step, an Attester conveys Evidence to a Verifier which compares the Evidence </del>  against its appraisal policy.  The Verifier then gives back an Attestation Result to the Attester, which simply caches it.  In the second step, the Attester presents the Attestation Result (and how employers and volunteer organizations perform background checks. In this model, the attestation sequence is initiated by a Relying Party.  The Attester conveys Evidence to the Relying Party, which <del> does not process its payload, but realys the message and optionally check its signature against a policed trust anchor store.  Upon receiving the evidence the Relying Party initiates a session with the Verifier.  Once session is established, it forwards the received Evidence to the Verfier.  The Verifier, appraises the received Evidence according to its appraisal policy for Evidence and returns a corresponding Attestation Result to the Relying Party.  The Relying Party then checks the Attestation Result against its own appraisal policy to conclude attestation. </del>  7.2.

Reviewer comments:
fix some typos and optimize the newly added diagrams to adapt to the width limitation
Thanks Wei! My humongous backlog told me "you'll fix this later" and now you did. Awesome!

Revised text:
According to the RATS Architecture, two reference models for Challenge/Response Attestation have been proposed.  This section  <ins> highlights the information flows bewteen the Attester, Verifier, and </ins> Relying Party undergoing Remote Attestation Procedure, using these models. The passport model is so named because of its resemblance to how nations issue passports to their citizens.  In this model, the  <ins> attestation sequence is a two-step procedure.  In the first step, an Attester conveys Evidence to a Verifier, which compares the Evidence </ins> against its appraisal policy.  The Verifier then gives back an Attestation Result to the Attester, which simply caches it.  In the second step, the Attester presents the Attestation Result (and how employers and volunteer organizations perform background checks. In this model, the attestation sequence is initiated by a Relying Party.  The Attester conveys Evidence to the Relying Party, which  <ins> does not process its payload, but relays the message and optionally checks its signature against a policed trust anchor store.  Upon receiving the Evidence, the Relying Party initiates a session with the Verifier.  Once the session is established, it forwards the received Evidence to the Verifier.  The Verifier appraises the received Evidence according to its appraisal policy for Evidence and returns a corresponding Attestation Result to the Relying Party.  The Relying Party then checks the Attestation Result against its own appraisal policy to conclude attestation. </ins> 7.2.