Answer: EMS
EMS is a crossword puzzle answer that we have spotted 364 times.
    - German spa
 
    - German river
 
    - Germany's Dortmund-___ Canal
 
    - Maximum limits?
 
    - Spa in Germany
 
    - Mom's twins?
 
    - Bad ___ (German spa)
 
    - Mime duo?
 
    - Summer center?
 
    - Mushroom ends?
 
    - North Sea feeder
 
    - German resort
 
    - Dash units
 
    - Ens' preceders
 
    - Millennium ends?
 
    - See 36-Down
 
    - Dash lengths
 
    - Rhineland spa
 
    - River to the North Sea
 
    - CPR pros
 
    - Leads for Marilyn Monroe?
 
    - Printers' widths
 
    - Typographers' measures
 
    - Type widths
 
    - Fat letters
 
    - Modem termini?
 
    - European spa
 
    - First responders: Abbr.
 
    - Ambulance inits.
 
    - Letters on an ambulance
 
    -     Miami duo?
 
    - Ambulance letters
 
    - Dash widths
 
    - River connected to a 165-mile long European canal
 
    - Letters after els
 
    - Mommy's triplets?
 
    - 911 responder, for short
 
    - Grp. gotten by dialing 911
 
    - Accident letters
 
    - 9-1-1 grp.
 
    - Grp. called after an accident
 
    - Bad ___, German resort
 
    - Type measures
 
    - Middle of summer?
 
    - Dorothy's aunt and others
 
    - Typography units
 
    - 911 responder: Abbr.
 
    - Emma's twins?
 
    - Swimming duo?
 
    - Printer's measures
 
    - Mickey Mouse's pair?
 
    - River through Lower Saxony
 
    - Ambulance org.
 
    - Mommy's threesome?
 
    - Some dashes
 
    - "Ammonia" has two
 
    - Ambulance abbr.
 
    - Bamm-Bamm's foursome
 
    - They're found in the middle of summer
 
    - Scrabble 3-pointers
 
    - Ambulance initials
 
    - Mamboing couple?
 
    - Typesetting widths
 
    - The middle of summer?
 
    - Lower Saxony river
 
    - Commune couple?
 
    - Dorothy's aunt, et al.
 
    - Double ens
 
    - Common couple?
 
    - Type units
 
    - Mom has two
 
    - Chummy pair?
 
    - Modem ends?
 
    - "A Midsummer Night's Dream" quartet
 
    - Agency featured in "Third Watch" (abbr.)
 
    - Every mammal has three of these
 
    - Typography widths
 
    - 911 response org.
 
    - Common sighting?
 
    - Common pair?
 
    - Mike Myers has two
 
    - Swimming center?
 
    - Minimum limits?
 
    - Printing measures
 
    - Common fraction?
 
    - Pair in rummy?
 
    - Lifesaving team, for short
 
    - Medium on the outside?
 
    - There are three in "mommy"
 
    - Slimming center?
 
    - Bad ___, Germany
 
    - Microfilm edges?
 
    - Ends of magnetism?
 
    - Long dashes
 
    - Trio appearing in "Mummenschanz"?
 
    - The fringes of monotheism?
 
    - They can be seen in the middle of summer
 
    - Items found off-center in symmetry?
 
    - "Mamma Mia!" trio?
 
    - Mummy's threesome?
 
    - Mammoth trio?
 
    - Minimum borders?
 
    - Bad __: German resort
 
    - Modem borders?
 
    - Miami couple?
 
    - Modem pair
 
    - Capitals of Maryland and Michigan?
 
    - Printer's widths
 
    - Bad __ (German spa)
 
    - Printing widths
 
    - Letter pair in ''pummel''
 
    - Ambulance grp.
 
    - Wide letters
 
    - Print widths
 
    - What's seen in the middle of summer?
 
    - Miami has two
 
    - A lot of mammograms?
 
    - Bad ___ (German resort)
 
    - Typesetter's units
 
    - Typesetting measures
 
    - Type width units
 
    - ''A Midsummer Night's Dream'' quartet
 
    - They're worth three points in Scrabble
 
    - Tommy has a couple
 
    - German spa, Bad ___
 
    - Mickey Mouse's beginnings?
 
    - Mommy's triplets
 
    - Typesetter's measures
 
    - Medium limits?
 
    - 911 respondent, briefly
 
    - There are two in Mozambique
 
    - Marilyn Monroe has two
 
    - Trio of mommies?
 
    - Ends of a midterm?
 
    - Mummies' three
 
    - Abbr. on an ambulance
 
    - Printer's spaces
 
    - Marilyn Monroe's start?
 
    - Tommy takes two
 
    - Rescue inits.
 
    - What ambulances provide, for short
 
    - Accident scene initials
 
    - Printer measures
 
    - Mummy's three?
 
    - Magnesium has two
 
    - Mammal's triplets?
 
    - Trio in summertime?
 
    - 911 response initials
 
    - Printers' measures
 
    - Type squares
 
    - "Yummy" pair
 
    - Bad ___: German resort
 
    - Marilyn's monogram
 
    - Letters from Miami?
 
    - "Mamma Mia!" has four
 
    - Bad in Germany
 
    - Letter pair in "pummel"
 
    - Extremes of magnetism?
 
    - Printers concern
 
    - Print designer's concern
 
    - Printer's concern
 
    - Printing units
 
    - Type designer's concern
 
    - Typographer's concern
 
    - Marxism extremes?
 
    - Summer center
 
    - Jimmy Kimmel's foursome
 
    - Rummy pair?
 
    - Couple in common?
 
    - Middle of 54-Across
 
    - Followers of 28 Down
 
    - Followers of els
 
    - Summertime trio?
 
    - Typog-raphy units
 
    - Print units
 
    - Print measures
 
    - Printmeasures
 
    - 911 responder (Abbr.)
 
    - Pairs of ens
 
    - The heart of summer?
 
    - These type units ...
 
    - Mid-summer trio?
 
    - Paramedic org.
 
    - Font widths
 
    - They precede ens
 
    - 'Yummy' pair
 
    - 'Tommy' has two
 
    - Letters before ens
 
    - 'Rummy' has two
 
    - 'Timmy' has two
 
    - 'Mummy' has three
 
    - They're between els and ens
 
    - Some printing dashes
 
    - Chummy couple?
 
    - Jimmy Kimmel has four
 
    - Rescue squad initials
 
    - Letters after ells
 
    - The limits of modernism?
 
    - 911 responders, collectively (abbr.)
 
    - Lifesaving squad: Abbr.
 
    - Drummer's pair?
 
    - 911 letters
 
    - Miami duo?
 
    - Dash sizes
 
    - 911 responders: Abbr.
 
    - German spa Bad ___
 
    - Mommy has three
 
    - There are two in mathematics
 
    - Big name in outdoor equipment, for short
 
    - 911 response grp.
 
    - Lead characters in "Mork & Mindy"?
 
    - Mismatched pair?
 
    - 911 respondents
 
    - Maximum trio?
 
    - Hosp. adjunct
 
    - Typographer's measures
 
    - 'Jimmy' has two
 
    - "Mamma Mia!" foursome
 
    - Accident initials
 
    - 'Mammal' has three
 
    - Printers' units
 
    - 911 responder
 
    - Printer's dash lengths
 
    - Typographical spaces
 
    - What "mammoth" has three of
 
    - Bad ___, German spa
 
    - What mom has that dad doesn't?
 
    - "Bad" place in Germany
 
    - Rescue letters
 
    - Three letters in "mommy"
 
    - 911 response letters
 
    - Bad ___ (spa)
 
    - Rescue squad letters
 
    - 911 gp.
 
    - Half of moms?
 
    - Type of units
 
    - Print shop units
 
    - What dialing 911 may bring
 
    - Crash site initials
 
    - Museum's ends?
 
    - Rescue-squad letters
 
    - Ambulance crew (Abbr.)
 
    - Trio in summertime
 
    - Printer's concerns
 
    - German spa town Bad ___
 
    - Type-setter's concern
 
    - Eminem's twins
 
    - Pair of commas?
 
    - See 42-Across
 
    - Bad ___ (noted spa)
 
    - 'Tammy' has two
 
    - Certain dash lengths
 
    - "Oz" aunt and others
 
    - Rhine's river
 
    - Printers' measure
 
    - "Mamma Mia" quartet
 
    - Grammar has two
 
    - Acute care initials
 
    - 911 responders, briefly
 
    - A mammal has three
 
    - Pair of jammies?
 
    - Grp. with defibrillators
 
    - Pair in "magnesium"
 
    - Mama has a couple
 
    - Pinters' concern
 
    - Grammar's two
 
    - Slammin' Sammy quartet
 
    - Summertime trio
 
    - Momma's triplets
 
    - Typography measures
 
    - Hummingbird's pair?
 
    - Linear printing units
 
    - Acute care letters
 
    - Quartet in "Mamma Mia!"
 
    - Outdoor retailer
 
    - 'Emmy' has two
 
    - Momma's triplets?
 
    - Grp. of CPR experts
 
    - Leading characters in "Mork & Mindy"?
 
    - Letters summoned by a 911 call
 
    - Slimming twins?
 
    - Letters on many ambulances
 
    - Scrabble three-pointers
 
    - First responder crew: Abbr.
 
    - Bad "accidental" letters?
 
    - Printers' concern
 
    - What moms have that dads don't?
 
    - Letters on ambulances
 
    - 911 responding grp.
 
    - Ambulance ltrs.
 
    - Abbr. on ambulances
 
    - 911 responders (Abbr.)
 
    - CPR offerer
 
    - Teammate twosome
 
    - Mommies' triplets?
 
    - Bamm-Bamm's four
 
    - Slimming couple?
 
    - Three letters in "mammoth"
 
    - Some type widths
 
    - Couple of swimmers?
 
    - Pair of moms?
 
    - Four characters in "A Midsummer Night's Dream"
 
    - Center of scrimmages?
 
    - Printers measure
 
    - First responders' initials
 
    - Features of hammers
 
    - Common duo?
 
    - First-responder letters
 
    - Common core?
 
    - Crammed duo?
 
    - Features of yammers?
 
    - Dummy's pair
 
    - Lifesaving team, in brief
 
    - Strumming twins?
 
    - Letters with humps
 
    - Twins in no comment?
 
    - Ambulance squad, for short
 
    - Ambulance gp.
 
    - First responders' letters
 
    - Letters for rescuers
 
    - Malamute pair?
 
    - Mickey Mouse's caps
 
    - 911 letters?
 
    - Trio of mummies
 
    - Starts to military march?
 
    - Timmy's two
 
    - Some dash lengths
 
    - Responders with defib units
 
    - Leading characters in "Mad Max"
 
    - Summer get-together?
 
    - Typographical units
 
    - "Chummy" couple
 
    - Minimum trio
 
    - Main menu openers
 
    - Option for a 911 dispatcher
 
    - Extremes of Marxism?
 
    - Common core
 
    - Paramedics' grp.
 
    - CPR group
 
    - Mammal's head and heart?
 
    - "Miami" has two of them
 
    - Pair of Grammys?
 
    - Pair of madmen?
 
    - Maximum borders?
 
    - Grp. mobilized by a 911 call
 
    - Museum wings?
 
    - Lifesaving inits.
 
    - Millennium, at the beginning and end?
 
    - 911 responder, briefly
 
    - Half a mammal?
 
    - Myanmar has two of them
 
    - CPR crew
 
    - What makes clay clammy?
 
    - Two-fifths of Miami?
 
    - First responders, briefly
 
    - First responder's group, for short
 
    - Lead characters in "Mike & Molly"?
 
    - Hummer's interior?
 
    - Printing measures longer than ens
 
    - Many letters in mummy
 
    - Modem terminals?
 
    - Letters on a first responder vehicle
 
    - Pair in gin rummy?
 
    - Ambulance crew, briefly