facilities   are   generally   equipped   to   meet   the needs  of  command  briefings  and  presentations to a wide variety of audiences. When a presenta- tion   room   lends   itself   to   different   types   of presentations,  one  of  three  styles  of  furniture arrangements  will  usually  be  employed.  These styles are theater style (chairs only), combination of   chairs   and   tables,   and   an   arrangement   of tables only. THEATER   STYLE   (CHAIRS   ONLY).— Some   presentations   and   briefings   employ   a chairs-only arrangement. In such cases the chairs are arranged in rows much like a movie theater seating   arrangement.   In   some   presentation facilities,  the  chairs  may  be  fixed  to  the  floor facing   the   screen. Seating   capacity   can   be increased through the use of folding chairs. Pro- jected  material  presented  in  this  type  of  room may  come  from  a  projection  booth  behind  the screen.  The  booth  is  physically  separated  from the presentation room by a wall and rear projec- tion screen. A chairs-only arrangement offers advantages as  well  as  disadvantages.  The  chairs  are  firmly attached to the floor, eliminating any possibility of  using  another  arrangement  style.  A  theater- style  arrangement  with  portable  chairs  makes  the rapid   conversion   to   another   style   possible,   if needed. When arranging a room with portable chairs, the  first  row  of  chairs  should  not  be  placed  too close  to  the  screen;  enough  space  should  be  left between  the  rows  to  provide  leg  room  for  the audience. Wide aisles should be left to take care of   traffic. TABLES   AND   CHAIRS.—Some   official military presentations are attended by personnel of  different  levels  of  authority.  Sometimes  per- sonnel   of   higher   echelons   are   seated   around tables, while the personnel of lower echelons are seated  in  chairs  arranged  in  theater  style.  The tables  and  the  lectern  are  arranged  in  front  of the  room;  that  is,  nearer  the  screen.  The  chairs in  which  those  of  lower  echelons  will  sit  are arranged  behind  the  tables.  Additional  chairs can be placed on either side of the table to take care  of  a  larger  number  of  people. TABLES   ONLY.—At   top   level   presenta- tions,  attended  by  a  few  high  ranking  individ- uals,  a  tables-only  arrangement  may  be  appro- priate.  The  table  should  be  long  enough  to seat people conveniently along the side. Another feature of the table arrangement is that everyone seated at the table has a clear view of the projec- tion screen, if one is utilized. Audience  Comfort Regardless  of  how  good  a  speaker  is  or  how interesting  the  presentation  may  be,  people  in the audience will have difficulty paying attention for  a  long  period  of  time  unless  they  are  com- fortable.  It  is  the  responsibility  of  the  RP  to make  the  audience  as  comfortable  as  possible during  the  presentation.  Some  of  these  condi- tions  may,  however,  be  beyond  the  control  of the  RP. Physical  comfort  is  a  necessity  if  the audience  is  to  concentrate  on  a  presentation. Nothing  will  distract  a  person  more  completely than  a  constant  feeling  that  “It’s  too  cold  to think”;    “It’s  so  hot  I  cannot  concentrate”; “The  room  is  so  stuffy  that  I  am  drowsy”;  “The light is so glaring it hurts my eyes”; “The light is so  poor  I  cannot  see”;  “It’s  so  noisy  I  cannot hear.”   The  members  of  the  audience  may  not express these sentiments to the speaker, but they will  certainly  discuss  them  among  themselves. These   are   legitimate   complaints   that   deserve attention. The comfort of the people who attend the presentation should be considered and steps taken to make them more comfortable wherever and whenever possible. Special   attention   should   be   paid   to   the lighting and temperature. Controlling these con- ditions  in  most  presentation  facilities  actually poses very few problems. With such built-in con- veniences  as  thermostats  for  temperature,  air- conditioning,  and  controllable  lighting,  the  RP will  have  to  do  no  more  than  turn  a  knob  on  a light  dimmer,  set  the  thermostat  to  control  the temperature,  or  turn  on  the  air-conditioning  to make   the   room   comfortable.   However,   rooms with   windows   and   without   air-conditioning require a little more initiative. Lighting   should   be   adequately   controlled. Naturally the type of presentation influences, to 7-12