+----------------------+----------+---------+---------+---------------+
| ##                   | Mar-06   |         |         |               |
|  Award FDCA Contract |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| ## Dress Rehearsal   | Mar-06 - |         |         |               |
|                      | May-09   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Open RCC in RO for | Nov-06 - |         |         | 1-OCE; 1-OC   |
| > Dress Rehearsal    | Dec-06   |         |         | F             |
|                      |          |         |         | unctionality; |
|                      |          |         |         | Limited       |
|                      |          |         |         | Voice/Data    |
|                      |          |         |         | Telecom; and  |
|                      |          |         |         | Help Desk     |
+----------------------+----------+---------+---------+---------------+
| > Train RCC Staff    | Dec-06   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Open 3 LCOs        | Jan-07 - |         |         | 3-OCE; 3-OC   |
|                      | Mar-07   |         |         | F             |
|                      |          |         |         | unctionality; |
|                      |          |         |         | Limited       |
|                      |          |         |         | Voice/Data    |
|                      |          |         |         | Telecom; and  |
|                      |          |         |         | Help Desk     |
+----------------------+----------+---------+---------+---------------+
| > Train LCO Staff    | Feb-07   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Train Listers      | Mar-07   |         | Approx  | Increased     |
|                      |          |         | 3000    | Help Desk to  |
|                      |          |         |         | handle        |
|                      |          |         |         | Listers and   |
|                      |          |         |         | MCEs          |
|                      |          |         |         | appropriate   |
|                      |          |         |         | to the number |
|                      |          |         |         | of            |
|                      |          |         |         | enumerators   |
|                      |          |         |         | for Address   |
|                      |          |         |         | Canvassing,   |
|                      |          |         |         | NRFU, NRFU    |
|                      |          |         |         | Reinterview,  |
|                      |          |         |         | and Coverage  |
|                      |          |         |         | Measurement   |
|                      |          |         |         | Person        |
|                      |          |         |         | Interview     |
|                      |          |         |         | Operations    |
|                      |          |         |         | only.         |
+----------------------+----------+---------+---------+---------------+
| > Conduct Census     | Mar-06 - |         |         |               |
| > Operations         | Oct-08   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Address    | Apr-07 - |         |         |               |
| > Canvassing         | May-07   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Address    | Apr-07 - |         |         |               |
| > Canvassing Quality | Jun-07   |         |         |               |
| > Control            |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Group      | Aug-07 - |         |         |               |
| > Quarters           | Sep-07   |         |         |               |
| > Validation         |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Group      | Aug-07 - |         |         |               |
| > Quarter Validation | Oct-07   |         |         |               |
| > Quality Control    |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Update/Leave       | Mar-08 - |         |         |               |
|                      | Apr-08   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct            | Mar-08 - |         |         |               |
| > Update/Leave       | Apr-08   |         |         |               |
| > Quality Control    |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Military   | Jan-08 - |         |         |               |
| > Advance Visit      | Mar-08   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Military   | Jan-08 - |         |         |               |
| > Advance Visit      | Mar-08   |         |         |               |
| > Quality Control    |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Special    | Jan-08 - |         |         |               |
| > Place/Group        | Mar-08   |         |         |               |
| > Quarters Advance   |          |         |         |               |
| > Visit              |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Special    | Feb-08 - |         |         |               |
| > Place/Group        | Mar-08   |         |         |               |
| > Quarters Advance   |          |         |         |               |
| > Visit Quality      |          |         |         |               |
| > Control            |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct            | Mar-08 - |         |         |               |
| > Update/Enumerate   | Jun-08   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct            | Mar-08 - |         |         |               |
| > Update/Enumerate   | Jun-08   |         |         |               |
| > Quality Control    |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Service    | Mar-08   |         |         |               |
| > Based Enumeration  |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Service    | Mar-08 - |         |         |               |
| > Based Enumeration  | Apr-08   |         |         |               |
| > Quality Control    |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Transient  | Mar-08   |         |         |               |
| > Night              |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Transient  | Mar-06   |         |         |               |
| > Night Quality      |          |         |         |               |
| > Control            |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Military   | Mar-08 - |         |         |               |
| > Group Quarters     | Apr-08   |         |         |               |
| > Enumeration        |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Military   | Apr-08   |         |         |               |
| > Group Quarters     |          |         |         |               |
| > Enumeration        |          |         |         |               |
| > Quality Control    |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Hotels and | Mar-08   |         |         |               |
| > Motels             |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Hotels and | Apr-08 - |         |         |               |
| > Motels Quality     | May-08   |         |         |               |
| > Control            |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Group      | Mar-08   |         |         |               |
| > Quarters           |          |         |         |               |
| > Enumeration        |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Group      | Apr-08 - |         |         |               |
| > Quarters           | May-08   |         |         |               |
| > Enumeration        |          |         |         |               |
| > Quality Control    |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Census Day         | Apr-08   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Be Counted | Apr-08 - |         |         |               |
|                      | Oct-08   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Coverage   | Apr-08 - |         |         |               |
| > Followup           | Sep-08   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Coverage   | Mar-06   |         |         |               |
| > Followup Quality   |          |         |         |               |
| > Control            |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct            | Apr-08 - |         |         |               |
| > Nonresponse        | Jul-08   |         |         |               |
| > Follow-Up          |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Non-Response       | May-08 - |         |         |               |
| > Follow-up Quality  | Aug-08   |         |         |               |
| >                    |          |         |         |               |
|  Control/Reinterview |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Field      | Jul-08 - |         |         |               |
| > Verification       | Aug-08   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Field      | Aug-08   |         |         |               |
| > Verification       |          |         |         |               |
| > Quality Control    |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Coverage   | Aug-07 - |         |         |               |
| > Measurement        | May-09   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct            | Aug-07 - |         |         |               |
| > Independent        | Dec-07   |         |         |               |
| > Listing            |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct            | Sep-07 - |         |         |               |
| > Independent        | Dec-07   |         |         |               |
| > Listing Quality    |          |         |         |               |
| > Control            |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Living     | Feb-08 - |         |         |               |
| > Quarters Followup  | Mar-08   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Living     | Feb-08 - |         |         |               |
| > Quarters Followup  | Mar-08   |         |         |               |
| > Quality Control    |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Person     | May-08 - |         |         |               |
| > Interview - Phone  | Jun-08   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Person     | May-08 - |         |         |               |
| > Interview - Phone  | Jun-08   |         |         |               |
| > Quality Control    |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Person     | Jun-08 - |         |         |               |
| > Interview -        | Oct-08   |         |         |               |
| > Personal Visit     |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Person     | Jul-08 - |         |         |               |
| > Interview -        | Oct-08   |         |         |               |
| > Personal Visit     |          |         |         |               |
| > Quality Control    |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Person     | Oct-08 - |         |         |               |
| > Followup           | Feb-09   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Person     | Nov-08 - |         |         |               |
| > Followup Quality   | Feb-09   |         |         |               |
| > Control            |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Final      | Feb-09 - |         |         |               |
| > Living Quarters    | May-09   |         |         |               |
| > Followup           |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Final      | Mar-09   |         |         |               |
| > Living Quarters    |          |         |         |               |
| > Followup Quality   |          |         |         |               |
| > Control            |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| ## Ce                | Mar-06 - |         |         |               |
| nsus 2010 Production | Sep-10   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Open 12 RCCs       | Oct-07 - |         |         | 132-OCE;      |
|                      | Nov-07   |         |         | 132-OC        |
|                      |          |         |         | F             |
|                      |          |         |         | unctionality; |
|                      |          |         |         | Moderate      |
|                      |          |         |         | Voice/Data    |
|                      |          |         |         | Telecom and   |
|                      |          |         |         | Help Desk     |
+----------------------+----------+---------+---------+---------------+
| > Train RCC Staff    | Oct-07 - |         |         |               |
|                      | Nov-07   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Open Early LCOs    | Oct-08 - |         |         |               |
| > (120) for Address  | Jan-09   |         |         |               |
| > Canvassing         |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Train LCO Staff    | Oct-08 - |         |         |               |
|                      | Dec-08   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Train Listers      | Nov-08 - |         |         |               |
|                      | Jan-09   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Open Remaining     | Jul-09 - |         |         | 462-OCE;      |
| > LCOs               | Oct-09   |         |         | 462-OC        |
|                      |          |         |         | F             |
|                      |          |         |         | unctionality; |
|                      |          |         |         | Full          |
|                      |          |         |         | Voice/Data    |
|                      |          |         |         | Telecom and   |
|                      |          |         |         | Help Desk     |
+----------------------+----------+---------+---------+---------------+
| > Train LCO Staff    | Jul-09 - |         |         |               |
|                      | Oct-09   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Train              | Aug-09 - |         |         |               |
| >                    | Oct-09   |         |         |               |
|  Listers/Enumerators |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| # Census Operations  |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct Address  | A        | 130,    | 85,937  | MCEs          |
| > Canvassing         | pril-May | 400,000 |         | appropriate   |
| > Operation**        | 2009     |         |         | to the number |
|                      |          |         |         | of            |
|                      |          |         |         | enumerators   |
|                      |          |         |         | for Address   |
|                      |          |         |         | Canvassing,   |
|                      |          |         |         | NRFU, NRFU    |
|                      |          |         |         | Reinterview,  |
|                      |          |         |         | and Coverage  |
|                      |          |         |         | Measurement   |
|                      |          |         |         | Person        |
|                      |          |         |         | Interview     |
|                      |          |         |         | Operations    |
|                      |          |         |         | only.         |
+----------------------+----------+---------+---------+---------------+
| > Conduct Address    | Apr-09 - | 15% of  |         |               |
| > Canvassing         | Oct-09   | main    |         |               |
| > Operation Quality  |          | op      |         |               |
| > Control            |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| ### C                | Aug 09   | 700,000 | 4,032   |               |
| onduct GQ Validation | --Sep 09 |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct GQ         | Aug-09 - | 15% of  |         |               |
| > Validation Quality | Oct-09   | main    |         |               |
| > Control            |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| ###                  | Mar-10   |         |         |               |
| Conduct Update/Leave |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct            | Mar-10 - |         |         |               |
| > Update/Leave       | Apr-10   |         |         |               |
| > Quality Control    |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct GQ       | Jan 10   | 300,000 | 4,032   |               |
| > Advance Visit**    | -- Feb   |         |         |               |
|                      | 10       |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct GQ Advance | Feb-10 - | 15% of  |         |               |
| > Visit Quality      | Mar-10   | main    |         |               |
| > Control            |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct Military | Jan 10   | 900     | 1,800   |               |
| > Advance Visit**    | -- Feb   |         |         |               |
|                      | 10       |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Military   | Feb-10 - | 15% of  |         |               |
| > Advance Visit      | Mar-10   | main    |         |               |
| > Quality Control    |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| ### Conduct QAC      | Mar-06 - |         |         |               |
|                      | Mar-06   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| ##                   | Mar-06   |         |         |               |
| # Conduct Be Counted |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| ### C                | Jan 10   | 40,000  | 800     |               |
| onduct Remote Alaska | -- Mar   |         |         |               |
|                      | 10       |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Remote     | Jan-10 - | 15% of  |         |               |
| > Alaska Quality     | Mar-10   | main    |         |               |
| > Control            |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct          | Mar 10   | 1,      | 17,298  |               |
| > Update/Enumerate** | -- Jun   | 700,000 |         |               |
|                      | 10       |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct            | Mar-10 - | 15% of  |         |               |
| > Update/Enumerate   | Jun-10   | main    |         |               |
| > Quality Control    |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct Service  | Mar 10   | 88,000  | 158,483 |               |
| > Based              |          |         |         |               |
| > Enumeration**      |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Service    | Mar-10   | 15% of  |         |               |
| > Based Enumeration  |          | main    |         |               |
| > Quality Control    |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| ### Update/Leave     | Mar 10   | 8,      | 27,330  |               |
|                      |          | 393,000 |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Be Counted       | Mar 10   | 40,000  | NA      |               |
| > (locations)**      | -- Jul   |         |         |               |
|                      | 10       |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct Hotel &  | Apr 10   | 84,000  | 31,697  |               |
| > Motel              | -- May   |         |         |               |
| > Enumeration**      | 10       |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Hotel &    | Apr-10 - | 15% of  |         |               |
| > Motel Enumeration  | May-10   | main    |         |               |
| > Quality Control    |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct          | Mar 10   | 15,000  | 22,704  |               |
| > Transient Night**  |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Transient  | Mar-10   | 15% of  |         |               |
| > Night Quality      |          | main    |         |               |
| > Control            |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| ### CENSUS DAY       | Apr-10   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct Groups   | Apr 10   | 250,000 | 38,733  |               |
| > Quarter            | -- May   |         |         |               |
| > Enumeration (group | 10       |         |         |               |
| > quarters)**        |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct GQ         | Apr-10 - | 15% of  |         |               |
| > Enumeration        | May-10   | main    |         |               |
| > Quality Control    |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct Military | Apr 10   | 900     | 1,800   |               |
| > Enumeration**      |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Military   | Apr-10   | 15% of  |         |               |
| > Enumeration        |          | main    |         |               |
| > Quality Control    |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct          | Apr 10   | 40,     | 420,348 |               |
| > Non-Response       | -- Jul   | 052,000 |         |               |
| > Follow-up**        | 10       |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct            | May-10 - | 15% of  |         |               |
| > Non-Response       | Aug-10   | main    |         |               |
| > Follow-up Quality  |          | op      |         |               |
| >                    |          | eration |         |               |
|  Control/Reinterview |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct Field    | Jul-10 - | 500,000 | 3,754   |               |
| > Verification**     | Aug-10   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Field      | Aug-10 - | 15% of  |         |               |
| > Verification       | Sep-10   | main    |         |               |
| > Quality Control    |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct Coverage | Apr-10 - | 6,      | 68,638  |               |
| > Follow Up**        | Sep-10   | 500,000 |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Coverage   | Apr-10 - | 15% of  |         |               |
| > Follow Up Quality  | Sep-10   | main    |         |               |
| > Control            |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| # Evaluations/Expe   |          |         |         |               |
| riment Operations -  |          |         |         |               |
| Coverage Measurement |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
|                      |          |         | **MAX   | MCEs          |
|                      |          |         | \# LQs  | appropriate   |
|                      |          |         | Natio   | to the number |
|                      |          |         | nwide** | of            |
|                      |          |         |         | enumerators   |
|                      |          |         |         | for Address   |
|                      |          |         |         | Canvassing,   |
|                      |          |         |         | NRFU, NRFU    |
|                      |          |         |         | Reinterview,  |
|                      |          |         |         | and Coverage  |
|                      |          |         |         | Measurement   |
|                      |          |         |         | Person        |
|                      |          |         |         | Interview     |
|                      |          |         |         | Operations    |
|                      |          |         |         | only.         |
+----------------------+----------+---------+---------+---------------+
| > **Conduct          | Sep --   | 2,      | 3,586   |               |
| > Independent        | Dec 2009 | 050,000 |         |               |
| > Listing**          |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct            | Mar-06   | 15% of  |         |               |
| > Independent        |          | main    |         |               |
| > Listing Quality    |          | op      |         |               |
| > Control            |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct Living   | Feb-10 - | 100,000 | 2,753   |               |
| > Quarters           | Mar-10   |         |         |               |
| > Followup**         |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Living     | Mar-06   | 15% of  |         |               |
| > Quarters Followup  |          | main    |         |               |
| > Quality Control    |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct Person   | May-10 - | 63,000  | 100     |               |
| > Interview Phone**  | Jun-10   |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Person     | Mar-06   | 15% of  |         |               |
| > Interview Phone    |          | main    |         |               |
| > Quality Control    |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct Person   | Jul-10 - | 252,000 | 3,596   |               |
| > Interview Personal | Oct-10   |         |         |               |
| > Visit**            |          |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Person     | Mar-06   | 15% of  |         |               |
| > Interview Personal |          | main    |         |               |
| > Visit Quality      |          | op      |         |               |
| > Control            |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct Person   | Nov 10   | 100,000 | 4,298   |               |
| > Followup**         | --Feb 11 |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Person     | Mar-06   | 15% of  |         |               |
| > Followup Quality   |          | main    |         |               |
| > Control            |          | op      |         |               |
|                      |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+
| > **Conduct Final    | F        | 22,000  | 2,079   |               |
| > Living Quarters    | ollowing |         |         |               |
| > Followup**         | PFU      |         |         |               |
+----------------------+----------+---------+---------+---------------+
| > Conduct Final      | Mar-06   | 15% of  |         |               |
| > Living Quarters    |          | main    |         |               |
| > Followup Quality   |          | op      |         |               |
| > Control            |          | eration |         |               |
+----------------------+----------+---------+---------+---------------+